Friction Gearing General Motors Research Corp Original Patent Lithograph 1932
On this original linen-backed lithograph from 1932 (includes original specification sheet), General Motors Research Corporation patented improvements in friction gearing. The research corporation was owned by General Motors Corporation (GM) and was founded by William C. Durant, Charles Stewart Mott, and Frederic L. Smith in 1908. The company went on to become one of the largest automobiles and parts manufactures in the world. Despite some spikes and falls in financial stability over the past century, the company remains to dominate a large portion of the industry.
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.
If you have any other inquiries concerning our business or the patents we are selling, please do not hesitate to contact us and we will respond promptly.