US2399170A
(en )
1946-04-30
Calculating machine
GB743554A
(enrdf_load_stackoverflow )
US2698139A
(en )
1954-12-28
machine release means key interlock
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
US1396716A
(en )
1921-11-08
magnus
US2291949A
(en )
1942-08-04
Listing adding machine
US3008637A
(en )
1961-11-14
Complemental keyboard
GB668507A
(enrdf_load_stackoverflow )
US1181238A
(en )
1916-05-02
Cash-register.
GB686541A
(enrdf_load_stackoverflow )
US2798672A
(en )
1957-07-09
Machine for calculating avoirdupois weights
GB753841A
(enrdf_load_stackoverflow )
US1715170A
(en )
1929-05-28
Attokmiy
GB457273A
(enrdf_load_stackoverflow )
GB748756A
(enrdf_load_stackoverflow )
1900-01-01
GB612392A
(en )
1948-11-11
Improvements in or relating to accounting machines and similar calculating machines
GB368311A
(enrdf_load_stackoverflow )
GB491465A
(enrdf_load_stackoverflow )
GB703886A
(enrdf_load_stackoverflow )
1900-01-01
GB611091A
(enrdf_load_stackoverflow )
GB401904A
(enrdf_load_stackoverflow )
GB598524A
(enrdf_load_stackoverflow )
GB822428A
(enrdf_load_stackoverflow )
GB438369A
(enrdf_load_stackoverflow )
GB838815A
(enrdf_load_stackoverflow )