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United States Patent

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United States Patent 3,141,944
Issue Date: July 21, 1964

Current U.S. Class: 200/506 ; 173/170; 200/322; 200/332; 408/710
Current International Class: H01H 21/00 (20060101); H01H 21/10 (20060101)



For U.S. patent law, rules, and procedures see MPEP.

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