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Patent US1274816 - A COBPOEATXON OF
A COBPOEATXON OF
NIKOLA TESLA
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Abstract
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Description
Claims
Patent number
: 1274816
Filing date
: Dec 18, 1918
Issue date
: 1918
Inventor
:
NIKOLA TESLA
Original Assignee
:
WALTHAIFF WATCH COMPANY
Current U.S. Classification
:
73/497
;
73/54.32
;
73/524
View patent at USPTO
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