Vibroplex midget patents
Horace G. Martin
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maintained by Randy Cole, KN6W
No other collectors so far have claimed to have seen one which could make this bug even rarer than the elusive Vibroplex Midget. This bug represents the fourth .
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As a key collector I have been asked many times to date Vibroplex advertised, patent dates, sales slips, Vibroplex's addresses over the . Midget Oct.
Description:Coffe of Cleveland, Ohio, had filed a patent for a mechanical sending machine on January 11th, , four months before Martin filed for his patent. In Coffe and a partner formed the Mecograph Company and began making bugs. Coffe sued Martin for patent infringement, and in actually won the case. However, the court declined to force Martin to pay damages or to stop manufacuring the Vibroplex. In , Martin and his partner J. Albright bought Mecograph and its patent and became the sole owner of all existing patents covering mechanical semiautomatic telegraph keys.