“Cat’s Whisker Detector” Benjamin Miessner Hand Written Letter Dated 1961. This item is certified authentic by Todd Mueller Autographs and comes with their Certificate of Authenticity. He left the Navy to work with. John Hays Hammond Jr. And Frtiz Lowenstein in 1911. The group worked on a wireless control system for torpedoes. While working for Hammond he invented a superheterodyne radio system. The group also invented the Electric Dog, a prop they used to demonstrate how light changes the electrical conduction properties of. Miessner and Hammond had a falling out and Miessner left the company in 1912. He studied electrical engineering at. Where he was a member of. He also communicated with. About the book on radio dynamics he was writing and Teslas own work in the field of radio controls. In June 1916 he married Eleanor M. They would have two daughters, Jane and Mary. Radiodynamics, the wireless control of torpedoes and other mechanisms. He was stationed in. Where he was in charge of the radio laboratory of the Navy Aeronautic Station. After World War I, he began working for. On radio for aircraft and transoceanic receivers in. In the early 1920s where he worked for the. Where he founded the companys acoustical lab. He moved back east to. In 1926 to be the chief engineer at Garod Corp. Over the next thirty years he would become a leader in the fields of electrical radio receivers, electronic musical instruments and receivers, phonography, radio dynamics, directional microphones for aircraft and submarines, aircraft radio, and other devices. He also developed a new system of sound recording and reproduction. And perfected the Wurlitzer organ and electronic piano. In 1929, he published his second book. All-electric Radio Receiver Design. And in 1936 he had fairly long article on electronic music and instruments published in the. Proceedings of the Institute of Radio Engineers. In the early 1930s he worked with his brother, Otto, to invent an instrument called a. Had already developed a similar instrument with the same name. In 1934, one of Miessners patents was used by the. In the first large scale production on an electronic organ known as the. Used his 1935 design for an amplified conventional piano as the basis for their highly successful. In 1937 Miessner designed an. He would be involved in a. Battle with another company on the violins design, which he lost. In 1955 he took the U. Court of Appeals ruled against him. While most of his patents had to do with electronics, sound, and music, others were variations from that work. Such as his inventions to adjust the string tension on a tennis racket. And for a non-leaking fountain pen. The item “Cat’s Whisker Detector Benjamin Miessner Hand Written Letter Todd Mueller COA” is in sale since Wednesday, August 12, 2020. This item is in the category “Collectibles\Autographs\Science, Inventor”. The seller is “historicsellsmemorabilia” and is located in Fort Lauderdale, Florida. This item can be shipped to United States.