GB274344A
(https= )
US1913510A
(en )
1933-06-13
Calculating machine
US1794464A
(en )
1931-03-03
Combined typewriting anb computing machine
US1655570A
(en )
1928-01-10
A cobpobation op
US2433679A
(en )
1947-12-30
Indian currency computing and recording calculator
GB205870A
(en )
1923-10-24
Improvements in or relating to calculating machines
US1883892A
(en )
1932-10-25
Walther flach
GB457273A
(https= )
GB217910A
(https= )
US903172A
(en )
1908-11-10
Cash-register.
US1043804A
(en )
1912-11-12
Cash-register.
GB259267A
(https= )
US1946602A
(en )
1934-02-13
Cash register
US1487999A
(en )
1924-03-25
Calculating machine
GB743554A
(https= )
GB213600A
(https= )
1900-01-01
GB668507A
(https= )
GB749504A
(https= )
GB509444A
(https= )
GB907591A
(https= )
GB285500A
(en )
1929-05-21
Improvements in or relating to cash registers
GB747470A
(en )
1956-04-04
Cash registers
GB417991A
(https= )
1900-01-01
GB748756A
(https= )
1900-01-01
GB420807A
(https= )
1900-01-01