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Patent US3280315 - KEY CONTROLLED DECIMAL ELECTRONIC CALCULATING MACHINE
KEY CONTROLLED DECIMAL ELECTRONIC CALCULATING MACHINE
N. KITZ
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Patent number
: 3280315
Filing date
: Dec 29, 1961
Issue date
: Oct 18, 1966
Inventor
:
N. KITZ
Original Assignee
:
Bell Punch Company Limited
Current U.S. Classification
:
708/142
View patent at USPTO
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