Microphone Wind Shield Radio Corp. of America Original Patent Lithograph 1932
On this original linen-backed lithograph from 1932 (includes original specification sheet), Radio Corporation of America patented improvements in or relating to microphone wind-shields. The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in 1919. It was initially a wholly owned subsidiary of General Electric (GE); however, in 1932, GE was required to divest its ownership of RCA as part of the settlement of a government antitrust suit.
An innovative and progressive company, RCA was the dominant electronics and communications firm in the United States for over five decades. RCA was at the forefront of the mushrooming radio industry in the early 1920s, as a major manufacturer of radio receivers, marketing the first superheterodyne models, and also created the first American radio network, the National Broadcasting Company (NBC). The company was also a pioneer in the introduction and development of television, both black-and-white and color. During this period, RCA was closely identified with the leadership of David Sarnoff. He was general manager at the company's founding, became president in 1930, and remained active, as chairman of the board, until the end of 1969.
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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