Patent#2104971, Granted To Oliver Irving Carpenter & Benjamin Francis Moss , Assignors to General Electric Limited (Coventry, England) for an Alleged New & Useful Improvement in Telephone Systems: Patent Certificate Dated January 11, 1938 Buy on Amazon
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Patent#2104971, Granted To Oliver Irving Carpenter & Benjamin Francis Moss , Assignors to General Electric Limited (Coventry, England) for an Alleged New & Useful Improvement in Telephone Systems: Patent Certificate Dated January 11, 1938

Author United States Patent Office
Publisher Government Printing Office
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Book Details
Author(s) United States Patent Office
Publisher Government Printing Office
ISBN / ASIN B0080IT23A
ISBN-13 978B0080IT233
Sales Rank #99,999,999
Marketplace United States 🇺🇸
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