receipt of which is hereby acknowledged, I, the said
Richard Doe have sold, assigned, and transferred, and by
these presents do sell, assign, and transfer unto the said
Ohio Typewriter Company, its successors and assigns, the
entire right, title and interest in and to said Letters
Patent and the invention therein patented; the same to be
held and enjoyed by the said corporation for its own use and
behoof, and for the use and behoof of its successors and
assigns, to the full end of the term for which said Letters
Patent are or may be granted, as fully and entirely as the
same would have been held and enjoyed by me had this
assignment and sale not been made.

_In testimony whereof_, I have hereto set my hand and
affixed my seal, at Columbus, County and State aforesaid,
this tenth day of January, A.D. 1901.

RICHARD DOE. (_Seal._)

In presence of
JOHN SMITH,
THOS. JONES.
STATE OF OHIO, }_ss._:
COUNTY OF FRANKLIN, }

Subscribed and acknowledged before me this tenth day of
January, A.D. 1901.

_Seal._ JOHN RICE, _Notary Public_.

If it is the intention of the assignor to convey to the assignee the
right to recover for past infringement of the patent, a clause like the
following should be added:

And for the same consideration, I do hereby sell, assign and transfer
unto the aforesaid corporation, all claims and demands, both at law and
in equity, which may have accrued to me by reason of the infringement of
the aforesaid Letters Patent with the right to sue and recover therefor
in its own name and for its own use and behoof.

ASSIGNMENT OF AN UNDIVIDED INTEREST

_Whereas_, I, Richard Doe, of Philadelphia, County of
Philadelphia, State of Pennsylvania, did obtain Letters
Patent of the United States for improvements in Locomotive
Headlights, which Letters Patent are numbered 000,000, and
bear the date of June 26, 1900; and whereas, John Roe, of
Philadelphia, County of Philadelphia and State of
Pennsylvania, is desirous of acquiring an interest in the
same: _Now, therefore_, this indenture witnesseth, that for
and in consideration of the sum of one thousand dollars to
me in hand paid by said John Roe, the receipt of which is
hereby acknowledged, I do hereby sell, assign, and transfer
unto the said John Roe, his heirs and assigns, one undivided
one-half interest in and