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Patent US463569 - CHUSETTS
CHUSETTS
EMILE BERLINER
› Overview
Abstract
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Description
Claims
Patent number
: 463569
Filing date
: Jun 4, 1877
Issue date
: Nov 17, 1891
Inventor
:
EMILE BERLINER
Original Assignee
:
THE AMERICAN BELL TELEPHONE COMPANY
Current U.S. Classification
:
381/178
View patent at USPTO
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