US2221861A
(en )
1940-11-19
Calculating machine
GB550978A
(en )
1943-02-03
Improvements in or relating to calculating or similar accounting machines
GB223866A
(enrdf_load_stackoverflow )
US1791899A
(en )
1931-02-10
Xwtlhelm k khopff
US3029014A
(en )
1962-04-10
Capellaro
US2285311A
(en )
1942-06-02
Accounting machine
US1819068A
(en )
1931-08-18
Overdraft and signal printing mechanism for calculating machines
US3001695A
(en )
1961-09-26
Totalizer controlling mechanism for cash registers and accounting machines
US2027449A
(en )
1936-01-14
Calculating machine and cash
US3086701A
(en )
1963-04-23
Capellaro
US2229771A
(en )
1941-01-28
Cash register
US1956569A
(en )
1934-05-01
Adding and listing machine
US3537641A
(en )
1970-11-03
Totalizer control mechanism
US2667303A
(en )
1954-01-26
Cash register key coupler
GB417991A
(enrdf_load_stackoverflow )
1900-01-01
GB398535A
(en )
1933-09-15
Improvements in or relating to tabulating machines
US2134683A
(en )
1938-11-01
Calculating machine
GB144685A
(en )
1921-04-07
Improvements in printing mechanism for calculating machines
GB389630A
(enrdf_load_stackoverflow )
1900-01-01
GB190828253A
(en )
1909-12-28
Improvements in and relating to Mechanical Calculators.
GB445877A
(en )
1936-04-20
Improvements in or relating to calculating or the like machines
GB215746A
(en )
1925-08-04
Improvements in cash registers and like machines
GB295632A
(enrdf_load_stackoverflow )
GB285885A
(enrdf_load_stackoverflow )
GB459812A
(enrdf_load_stackoverflow )