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Patent US1749738 - AND PERCY L
AND PERCY L
ALFRED J. FINN
› Overview
Abstract
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Description
Claims
Patent number
: 1749738
Filing date
: Sep 19, 1928
Issue date
: Mar 4, 1930
Inventor
:
ALFRED J. FINN
Original Assignee
:
THE WESTERN UNION TELEGRAPH COMPANY
Current U.S. Classification
:
178/70.00A
View patent at USPTO
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