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1962
Pseudo division and pseudo multiplication processes
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1837
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(enrdf_load_stackoverflow )
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1934-07-31
Calculating machine
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1955-12-06
landsiedel
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1963-02-26
Heinzeetal
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(enrdf_load_stackoverflow )
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1954-01-05
Binary-octal-decimal computer
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1972-02-15
Electronic printing digital calculator
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1953-04-21
Counter mechanism
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1962-01-02
Division mechanism for listing calculator
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1966-09-06
Adding system for binary coded excess three numbers
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1920-04-27
Combined typewriting and computing machine
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1961-07-18
Multiplication mechanism for adding machines
GB1055714A
(enrdf_load_stackoverflow )
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1963-03-26
Schenk
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1919-03-04
Algebraic-total calculating-machine.
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(enrdf_load_stackoverflow )
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1968-12-31
Calculating mechanisms for calculating machines
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1972-07-04
Calculating machine
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(enrdf_load_stackoverflow )
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1969-01-21
Ten key calculating machine adapted to effect multiplications as well as divisions
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(enrdf_load_stackoverflow )
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(enrdf_load_stackoverflow )
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1969-06-24
Automatic shortcut multiplication device for a calculating machine