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to James L. Dayton

Powell seeks to procure a joint stock company to manufacture articles invented by Mr. A.M. Olds. Dayton responds on the back, agreeing to see about bringing the patents into use.

GLC00687.202

to John A. Wiedersheim

He is billing GMP for a letter patent, including government fee, drawings and specifications, and prosecution. Partially printed.

GLC00687.204

Powell's Patent Multiscope

He proposes a substitute for the expensive calcium light for viewing images, with an object that uses either sunlight or lamp light using a graphoscope, inserting a stereoscopic lens. Different lenses allow for different uses, including microscope...

GLC00687.205

to J. W. Sullivan

Because George May Powell did not write with their proposition, he agrees to use efficient skill and energy to start with a plan listing people and their interest in the patent. Powell will raise necessary funds to set things in motion, and will...

GLC00687.232

[Patent for Jacob Bromwell's improvement of the wheat fan, or winnowing machine and J.Q. Adams and Engraving of James Monroe and James Monroe]

Document signed by John Quincy Adams and James Monroe, 1 engraving of John Quincy Adams, and 3 engravings of James Monroe.

GLC04823

[Patent for Jacob Bromwell's improvement of the wheat fan, or winnowing machine]

Signed by James Monroe as President and countersigned by John Quincy Adams as Secretary of State and William Wirt as Attorney General. Features paper seal and green ribbon. On separate page, Bromwell's written description of his improvement is signed...

GLC04823.01

East Gallery Patent Office in Washington D.C.

A view down a long column-lined corridor at the patent office. Inscription on verso: "Interior East Gallery Patent Office Wash." Numeric notation on verso: "180."

GLC05111.01.0870

East Gallery Patent Office in Washington D.C. (Copy 1)

Image identical to #870

GLC05111.01.0871

East Gallery Patent Office in Washington D.C. (Copy 2)

Image identical to #870 and #871

GLC05111.01.0872

East Gallery Patent Office in Washington D.C. (Copy 3)

Image identical to #870 - #872.

GLC05111.01.0873

[Patent for Otis Tufts' improvement in the power printing press]

Signed by Andrew Jackson as President. Countersigned by John Forsyth as Secretary of State and Benjamin Franklin Butler as Attorney General. Tufts' written description of his improvement is signed by Robert Henry Eddy and possibly Caleb Babbit as...

GLC05183

Archive of Alexander Twining, including inventions, writings and patents [Decimalized .01- .07]

Twining was an astronomer, and invented an ice-making apparatus. The archive includes: supplement to patent application, bound handwritten scientific journal, essay, various letters and diagrams.

GLC07242

to Professor Alexander Catlin Twining

A letter written by Thomas Main to Professor Alexander Catlin Twining. Main found a series of designs Twining had drawn for an ice machine and was notifying Twining that they were in his possession.

GLC07242.05

Supplemental information

A manuscript of supplamental information regarding Alexander Catlin Twining's patent application for an ice machine. There is a large illustration on page 2.

GLC07242.06

to Eliakim P. Scammon

Wishes to remain in service. Father died serving under Genl. Taylor in Mexico; brother died serving under Genl. Worth. Served for seven years in the U.S. patent office after being recommended by various generals, including Winfield Scott. Docket...

GLC02414.386

to Henry Knox

Mentions that the mechanic Joseph Pope, who invented the orrery purchased by the legislature for Harvard, "brought with him on his return from England, a great Variety of Drawings of many of the most useful and late invented machines, mills, &c...

GLC02437.05129

to Joseph B. Varnum

Massachusetts Congressman Samuel Dana introduces William Whittemore to Varnum, Speaker of the House of Representatives. Informs Varnum that Whittemore will be travelling to Washington, D.C. in order to preserve the patent for "the exclusive use of...

GLC03845.07

to John Nazro

Has not considered Nazro's letter because "by law the mode of obtaining patents has been altered." Encloses the circumstances of the new law, which passed on 21 February. When he applies under the new law he will obtain his patent.

GLC02437.06050