GB674827A
(enrdf_load_stackoverflow )
US2019900A
(en )
1935-11-05
Accounting machine
US2297243A
(en )
1942-09-29
Division mechanism
US2902124A
(en )
1959-09-01
Operating mechanism for power driven business machines
US2261341A
(en )
1941-11-04
Adding and listing machine
US2701685A
(en )
1955-02-08
Calculating mechanism
US3286919A
(en )
1966-11-22
Calculating machine, especially pour-species
calculating machine
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
US3072329A
(en )
1963-01-08
Control for motor operated business machines
US1296073A
(en )
1919-03-04
Algebraic-total calculating-machine.
US2894682A
(en )
1959-07-14
Actuator mechanism for a ten-key machine
GB686524A
(enrdf_load_stackoverflow )
US3476313A
(en )
1969-11-04
Calculating machine with short cut multiplication
GB551311A
(enrdf_load_stackoverflow )
US2946507A
(en )
1960-07-26
Lydfors
US3432094A
(en )
1969-03-11
Four-species calculating machine
GB434369A
(enrdf_load_stackoverflow )
GB411291A
(enrdf_load_stackoverflow )
GB576655A
(enrdf_load_stackoverflow )
GB438516A
(enrdf_load_stackoverflow )
GB483113A
(enrdf_load_stackoverflow )
GB516693A
(enrdf_load_stackoverflow )
GB483093A
(enrdf_load_stackoverflow )
GB718412A
(enrdf_load_stackoverflow )
GB537503A
(enrdf_load_stackoverflow )