GB475550A
(enExample )
US1964478A
(en )
1934-06-26
Calculating machine
US1832791A
(en )
1931-11-17
Calculating machine
US2206724A
(en )
1940-07-02
Calculating machine
GB410974A
(enExample )
1900-01-01
GB221142A
(enExample )
US3039680A
(en )
1962-06-19
Cash registers
GB742084A
(en )
1955-12-21
Improvements in or relating to accumulator mechanism for record card controlled and other calculating machines
GB703886A
(enExample )
1900-01-01
US1369097A
(en )
1921-02-22
Calculating-machine
US2291949A
(en )
1942-08-04
Listing adding machine
GB735178A
(enExample )
GB436135A
(enExample )
GB819544A
(en )
1959-09-02
Improvements in cash registers and similar accounting machines
GB190715268A
(en )
1908-07-02
Improvements in Cash Registers
GB689904A
(enExample )
GB190722080A
(en )
1908-05-28
Improvements in Cash Registers.
US1230862A
(en )
1917-06-26
Cash-register.
GB1242050A
(en )
1971-08-11
Cash register or similar accounting machine
GB470265A
(enExample )
GB542476A
(enExample )
GB191414137A
(en )
1915-06-11
Improvements in Cash Registers or the like.
GB190913416A
(en )
1910-06-02
Improvements in Adding and Subtracting Machines.
GB526762A
(en )
1940-09-25
Improvements in calculating machines
GB294468A
(enExample )