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A carousel slide projector is a slide projector that uses a rotary tray to store slides, used to project slide photographs and to create slideshows. It was first patented on May 11, 1965, by David E. Hansen of Fairport, New York. Hansen was an industrial designer at the Eastman Kodak Company. [1]
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The electronics industry now uses many surface-mounted lithium battery holders or sockets. CR2/3A, CR1/2AA, and CR123A batteries began in camera applications but expanded into new markets like alarm systems, hand held computers and keyfobs .
A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).
The Hansen Writing Ball is an early typewriter. It was invented in 1865 and patented and put into production in 1870, and was the first commercially produced typewriter. It was invented in 1865 and patented and put into production in 1870, and was the first commercially produced typewriter.
The letter k was a favorite of George Eastman's; he is quoted as saying, "it seems a strong, incisive sort of letter." [24] He and his mother, Maria, devised the name Kodak using an Anagrams set.