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to John A. Wiedersheim
10 November 1882
Powell, George May, 1835-1905
He is billing GMP for a letter patent, including government fee, drawings and specifications, and prosecution. Partially printed.
GLC00687.204
Powell's Patent Multiscope
1864-1905
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
June 1, 1865
Williams, A. F., fl. 1864-1866
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]
November 26, 1818
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]
26 November 1818
Monroe, James, 1758-1831
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
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