US2399170A
(en )
1946-04-30
Calculating machine
US2503865A
(en )
1950-04-11
Differential setting mechanism fob
GB365164A
(enrdf_load_stackoverflow )
US2226960A
(en )
1940-12-31
Accounting machine
US1957501A
(en )
1934-05-08
Method and means for obtaining true
US2364769A
(en )
1944-12-12
Accounting machine
US2492703A
(en )
1949-12-27
Division mechanism for key-respon
US2285311A
(en )
1942-06-02
Accounting machine
US2266845A
(en )
1941-12-23
Cash register
GB1197609A
(en )
1970-07-08
Improvements in or relating to Calculating Machines, Cash Registers or the like.
US1192721A
(en )
1916-07-25
Adding and listing machine.
US1088831A
(en )
1914-03-03
Cash-register.
GB1121077A
(enrdf_load_stackoverflow )
GB480322A
(enrdf_load_stackoverflow )
GB501566A
(en )
1939-03-01
Improvements in accounting machines
US1804103A
(en )
1931-05-05
Werke aktiengesellschaet
US1232018A
(en )
1917-07-03
Restoring mechanism for calculators.
GB481730A
(enrdf_load_stackoverflow )
GB545439A
(enrdf_load_stackoverflow )
GB206798A
(enrdf_load_stackoverflow )
US1744183A
(en )
1930-01-21
Assig-itoh
US2291949A
(en )
1942-08-04
Listing adding machine
GB401904A
(enrdf_load_stackoverflow )
GB612392A
(en )
1948-11-11
Improvements in or relating to accounting machines and similar calculating machines
GB221142A
(enrdf_load_stackoverflow )