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Although the actual inventor of the hand-held metal detector is disputed, the hand-held metal detector was made in 1925 and was first patented by Dr. Gerhard Fisher in 1931. A metal detector had been invented some forty years earlier (1881) by Alexander Graham Bell for the sole purpose of locating a lead bullet in President James A. Garfield.
Wyman-Gordon is a company that designs and manufactures complex metal components. Founded in 1883 as a manufacturer of crankshafts for looms, it has a long history of making forged metal components, particularly for the aerospace industry. Wyman-Gordon is a wholly owned subsidiary of Precision Castparts Corp., and is based in Houston, Texas. It ...
Rapiscan Metor walk-through metal detectors stem originally from Outokumpu, which was one of the first companies to develop walk-through metal detectors for security screening. The systems were originally adapted from metal detectors used in the mining industry to locate parts of broken drill bits in minerals on a conveyor belt. [5]
There are many different models from several different companies currently in use worldwide by U.S. and coalition forces. These are not your run of the mill metal detectors that you can buy at your local store, they are highly sophisticated, ultra sensitive, programmable devices. [20]
ARLO-Micromodels (former - Fabrica de construções ARLO - Porto-Portugal, established in 1939 by Arnaldo Luizello da Rocha-Brito) - Still existing today and as a five generation owned brand, Patent 22130 (discontinued actually), as being the first multimaterial kits produced, using several wood types parts, industrially finely cut and lathe shaped, embossed tinplate parts using cutting dies ...
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