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Chang-Fa Yang
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Hsin-Chuang, TW
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last 30 patents
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Patent Grant
Alarm device designed to warn of danger of hitting high voltage pow...
Patent number
6,124,798
Issue date
Sep 26, 2000
Institute of Occupational Safety and Health, Council of Labor Affairs, Execut...
Chi-Fu Tai
B66 - HOISTING LIFTING HAULING