Airplane improvements Gerard Post Herrick Original Patent Lithograph 1932
Airplane improvements Gerard Post Herrick Original Patent Lithograph 1932
Airplane improvements Gerard Post Herrick Original Patent Lithograph 1932

Airplane improvements Gerard Post Herrick Original Patent Lithograph 1932


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DESCRIPTION:

On this original linen-backed lithograph from 1932 (includes original specification sheet), Gerard Post Herrick, a citizen of the United States, patented improvements in or relating to airplanes. Gerard Post Herrick (1873-1955) was an inventor and research engineer who is known as the inventor of the "convertible aircraft." Herrick, a graduate of Princeton (1895) and the New York Law School (1897), served as a captain in the Army Air Service during World War I (1918-19). Herrick is best known for his invention of the Herrick rotary engine and the Herrick HV-2A Vertaplane (Hernick Verto-Plane Heath HV2A), the first aircraft which could operate both as a fixed-wing airplane and as a giroplane (1937). Herrick remained as president of Covertoplane Corp, working on production plans for the Vertoplane, until his death.

All patent lithographs sold by Maymont Group are 100% ORIGINAL.

These documents are NOT reproductions or posters (patent art).

These are the original lithographs found in books obtained from the Patent and Trademark Office directly.

 

In the 1800's and early 1900's, inventors would submit a detailed drawing of the invention and/or improvements to the patent and trademark office. Once received and if approved, the Patent office would then send a letter of confirmation to the inventor and begin to take that drawing and etch it into stone in order to create and print this linen-backed lithograph. These documents are the original hard copies that were created by the patent office's artists, and act as patent examiner reference material. With that being said, these are 100% original and are the only physical copies in existence.

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