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(en )
1940-12-10
Locking mechanism for calculating
GB514291A
(enrdf_load_stackoverflow )
US1601398A
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1926-09-28
- cincinnati
US2285311A
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1942-06-02
Accounting machine
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1927-10-18
peters
GB672771A
(enrdf_load_stackoverflow )
GB617346A
(enrdf_load_stackoverflow )
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1896-10-27
Fayette barnard
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1929-12-03
morton
GB1122887A
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1968-08-07
A data entry machine
GB191311823A
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1914-03-05
Improvements in and relating to Adding and Listing Machines.
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1915-07-19
Improvements in Calculating Machines.
US3429503A
(en )
1969-02-25
Cash registers and like adding machines
GB487494A
(enrdf_load_stackoverflow )
US3549087A
(en )
1970-12-22
Ten key calculating machine
GB191226772A
(en )
1913-11-26
Improvements in and relating to Calculating Machines.
GB522721A
(en )
1940-06-25
Improvements relating to calculating machines
GB351007A
(enrdf_load_stackoverflow )
GB346842A
(enrdf_load_stackoverflow )
GB368254A
(en )
1932-03-01
Improvements in or relating to calculating machines and the like
GB191316036A
(en )
1914-09-11
Improvements in and relating to Calculating Machines.
GB191027151A
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1911-09-28
Improvements in Calculating Machines.
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB852822A
(enrdf_load_stackoverflow )
GB191227768A
(en )
1913-11-27
Improvements in and relating to Keyboard and Interlocking Mechanism for Cash Registers and the like.