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Sung Chuel Lee
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Bridgeport, CT, US
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last 30 patents
Information
Patent Grant
Audible signal device
Patent number
4,199,752
Issue date
Apr 22, 1980
Sonetronic Engineering, Inc.
John R. Lucas
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Patent Grant
Optical smoke detector with smoke effect simulating means
Patent number
4,053,785
Issue date
Oct 11, 1977
General Signal Corporation
Sung Chuel Lee
G08 - SIGNALLING