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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 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

AuthorUnited States Patent Office
PublisherGovernment Printing Office
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Book Details

Author(s)United States Patent Office
PublisherGovernment Printing Office
ISBN / ASINB0080IT23A
ISBN-13978B0080IT233
Sales Rank99,999,999
MarketplaceUnited States  🇺🇸

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