GB550978A
(en )
1943-02-03
Improvements in or relating to calculating or similar accounting machines
GB885628A
(enrdf_load_stackoverflow )
US2416809A
(en )
1947-03-04
Selective normalizing mechanisms
GB943821A
(en )
1963-12-04
A cash register or similar accounting machine
US2708550A
(en )
1955-05-17
Value setting and transmitting mechanism for a ten key machine
SE308119B
(enrdf_load_stackoverflow )
1969-02-03
US1987742A
(en )
1935-01-15
Keyboard clutch
US2087182A
(en )
1937-07-13
Listing adding machine
GB551311A
(enrdf_load_stackoverflow )
US2261341A
(en )
1941-11-04
Adding and listing machine
US2570931A
(en )
1951-10-09
Printing tabulating mechanism
US1964975A
(en )
1934-07-03
Calculating machine
GB748825A
(en )
1956-05-09
Improvements in or relating to tabulator mechanism of a typewriter or like machine
GB545438A
(enrdf_load_stackoverflow )
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
US1970096A
(en )
1934-08-14
Calculating machine
GB631379A
(enrdf_load_stackoverflow )
US1965192A
(en )
1934-07-03
Cash register
US2055623A
(en )
1936-09-29
Calculating machine
GB406152A
(enrdf_load_stackoverflow )
1900-01-01
GB434369A
(enrdf_load_stackoverflow )
GB413205A
(enrdf_load_stackoverflow )
1900-01-01
US2809782A
(en )
1957-10-15
fleming
GB318256A
(enrdf_load_stackoverflow )
GB453280A
(enrdf_load_stackoverflow )