US2917232A
(en )
1959-12-15
Wagemann
GB1048619A
(enrdf_load_stackoverflow )
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(en )
1954-07-06
Recording and paper feed control
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(en )
1942-11-17
Calculating machine
US2352376A
(en )
1944-06-27
Calculating machine
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(en )
1966-11-22
Calculating machine, especially pour-species
calculating machine
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(en )
1961-07-18
Multiplication mechanism for adding machines
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(en )
1956-07-24
ellerbeck
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(en )
1955-02-01
Degrees, minutes, and seconds machine
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(en )
1962-11-06
Ellerbeck
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(en )
1941-06-10
Adding and calculating machine
US3170625A
(en )
1965-02-23
Capacity-exceeding indicating means for computers
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(en )
1956-02-28
Ellerbeck
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(en )
1962-05-29
moody
US2414027A
(en )
1947-01-07
Partial
GB1063900A
(enrdf_load_stackoverflow )
US3598971A
(en )
1971-08-10
Device for introducing values into a calculating machine, having a reduced keyboard
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(en )
1969-03-11
Four-species calculating machine
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(en )
1942-08-04
Listing adding machine
GB191115908A
(en )
1912-07-04
Improvements in or relating to the Setting and Differential Actuating Mechanisms of Calculating-machines.
GB749134A
(enrdf_load_stackoverflow )
GB491465A
(enrdf_load_stackoverflow )
GB469028A
(enrdf_load_stackoverflow )
GB191419145A
(en )
1915-11-29
Improvements in or relating to Calculating Machines.
GB736097A
(enrdf_load_stackoverflow )