GB624371A
(enrdf_load_stackoverflow )
US1246087A
(en )
1917-11-13
Adding and subtracting machine.
GB509747A
(enrdf_load_stackoverflow )
US2297243A
(en )
1942-09-29
Division mechanism
US2902124A
(en )
1959-09-01
Operating mechanism for power driven business machines
US2662690A
(en )
1953-12-15
Numeral wheel locking mechanism
US1323894A
(en )
1919-12-02
Actuating mechanism for calculating-machines
US2279054A
(en )
1942-04-07
Calculating machine
GB370662A
(enrdf_load_stackoverflow )
US1773025A
(en )
1930-08-12
chase
GB411291A
(enrdf_load_stackoverflow )
US2391098A
(en )
1945-12-18
Calculating machine
GB435286A
(enrdf_load_stackoverflow )
US3032262A
(en )
1962-05-01
T avery
GB703886A
(enrdf_load_stackoverflow )
1900-01-01
GB413205A
(enrdf_load_stackoverflow )
1900-01-01
GB507723A
(enrdf_load_stackoverflow )
GB451121A
(en )
1936-07-30
Improvements in and relating to printing calculating machines, adding machines, cashregisters or the like
GB438516A
(enrdf_load_stackoverflow )
GB545438A
(enrdf_load_stackoverflow )
GB464746A
(enrdf_load_stackoverflow )
GB310370A
(enrdf_load_stackoverflow )
GB611603A
(enrdf_load_stackoverflow )
GB368311A
(enrdf_load_stackoverflow )
GB267630A
(enrdf_load_stackoverflow )