3. The party of the second part agrees to pay to the party of the first part Five Dollars, as a license-fee, upon every grain-separator manufactured by said party of the second part containing said patented improvements; provided, that if the said fee be paid upon the days specified herein for semi-annual returns, or within ten days thereafter, a discount of twenty per cent. shall be made from said fee for prompt payment.

4. Upon a failure of the party of the second part to make returns, or to make payment of license-fees, as herein provided, for thirty days after the days herein named, the party of the first part may terminate this license by serving a written notice upon the party of the second part; but the party of the second part shall not thereby be discharged from any liability to the party of the first part for any license-fee due at the time of the service of the said notice.

In Witness Whereof the parties above named have hereunto set their hands the day and year first above written.

In presence of Thomas Lay.

JOHN L. PALMER, JEROME I. CASE.

License Granted To Use A Patent In A Mechanic's Shop

Know all Men by These Presents, That in consideration of the payment to me of the sum of Sixty Dollars, by John Scott, of the village of Trenton, in the county of Yell, and State of Arkansas, the receipt of which I hereby acknowledge, I do hereby license and empower the said John Scott to manufacture, at one blacksmith shop in the village of Trenton aforesaid, my improved rotary horseshoe, for which letters-patent of the United States, No. 31,265, were granted to me December 6, 1881, and to use and sell the said rotary horseshoes, in his business of blacksmithing, for two years from and after this date.

Witness my hand and seal this third day of April, A. D. 1882.

ASAHEL MERRITT

L. S.

Territory Assigned To The Purchaser Of The Right To Sell A Patent

Know all Men by These Presents, That in consideration of the sum of Fifteen Hundred Dollars, to me in hand paid by George M. Van Cleve, of the city of Syracuse, in the county of Onondaga, and State of New York, the receipt whereof is hereby acknowledged, I do hereby grant and convey to the said George M. Van Cleve the exclusive right to make, use and vend, within the State of Delaware, and in no other place or places, the improvement in thrashing-machines for which letters-patent of the United States, dated July 5, 1882, were granted to me, the same to be held and enjoyed by the said George M. Van Cleve as fully and entirely as the same would have been held and enjoyed by me if this grant had not been made.

Witness my hand and seal this fifteenth day of January, A. D.

1883. ROMEO KENDALL.

l. S.

Facts Which Patentees Should Understand

Tax on Patents. - A patent is not subject to either local, State or national taxes.

Can Be Assigned. - Patents can be assigned like other written evidences of proprietorship. (See Assignments.)

Aliens and Minors. - Patents are granted to aliens, minors or women; also to administrators and executors of deceased inventors.

Assignees. - Patents may be granted and also re-issued to the assignee of the inventor or discoverer; but the assignment must first be recorded in the patent-offlce.

The Name of the Inventors and that of the assignee, if it be assigned, together with the title of the invention, must be permanently affixed to the model.

Patents In Great Britain. - Patent covers England, Wales, Scotland and Ireland. No model required. Patent good for fourteen years. Fees from $200 to $300.

Appeals. - When an examiner rejects a case, appeal is made to the examiner-in-chief, next to the commissioner of patents, and lastly to the supreme court of the district.

Patent Papers are not prepared at the patent-office at Washington, but should be prepared and all in readiness for examination before sending the model and papers to Washington.

Public Property. - The commissioner of patents has no power to renew a patent. The monopoly on the same expires at the end of seventeen years and it then becomes public property.

Other Countries. - Patents in Spain extend for twenty years; Italy, fifteen years; Russia, ten years; Australian colonies, fourteen years. Fees for the entire term in foreign countries will be from $200 to $500.

Interference. - A disagreement as to who is the first to produce a certain invention is termed an interference. In such case a trial is had before the examiner, each contestant being represented by a competent person to present the merits of the case fully.

Order of Examination. - The case of a patent passes into its regular class, and is taken up for examination with others in its regular rotation. Exception to this is made in cases of re-issue, in foreign patents, and patents which are of especial importance to the public service.

The Inventor of a patent must apply for the same in his own name, over his own signature. An attorney cannot sign for the inventor; and yet, in many cases, the inventor may find it most convenient and economical to employ a patent-solicitor of experience to care for his legal work.

Legibility. - The law requires that all papers deposited at the patent-office shall be correctly and legibly written.

Patents in Germany. - Good for fifteen years. Patent may be taken for one year and extended by payment of annual tax.

Foreign Inventors must have their patented article in use or for sale in the United States within eighteen months from date of patent.

Patents In France. - Patent good for fifteen years. No model required. Annual tax on patent of $20. Patent ceases if tax unpaid. Fees from $100 to $150.

Infringement. - An invention which is an improvement on a previous patent is not an infringement, unless to produce the improvement the previous patent be used.

Assignments, agreements, contracts, and all important papers relating to change of ownership should be recorded at Washington, the same as the original patent papers.