US2160361A
(en )
1939-05-30
Calculating machine
GB518837A
(enrdf_load_stackoverflow )
US2108896A
(en )
1938-02-22
Cash register
US2705106A
(en )
1955-03-29
Calculating machines
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
US2459441A
(en )
1949-01-18
Computing machine
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
US3350006A
(en )
1967-10-31
Calculating machine
GB601375A
(enrdf_load_stackoverflow )
US1339704A
(en )
1920-05-11
Combined typewriting and computing machine
GB633957A
(enrdf_load_stackoverflow )
US2994474A
(en )
1961-08-01
fleming
US3039680A
(en )
1962-06-19
Cash registers
GB417991A
(enrdf_load_stackoverflow )
1900-01-01
US1179564A
(en )
1916-04-18
Adding-machine.
GB484095A
(enrdf_load_stackoverflow )
GB516693A
(enrdf_load_stackoverflow )
GB205870A
(en )
1923-10-24
Improvements in or relating to calculating machines
GB491465A
(enrdf_load_stackoverflow )
GB487494A
(enrdf_load_stackoverflow )
GB381769A
(enrdf_load_stackoverflow )
GB496720A
(enrdf_load_stackoverflow )
GB438369A
(enrdf_load_stackoverflow )
GB416498A
(enrdf_load_stackoverflow )
GB822428A
(enrdf_load_stackoverflow )