US2931564A
(en )
1960-04-05
Digital switch mechanism for combined accounting machine and tape recorder
GB301396A
(enrdf_load_stackoverflow )
US2247938A
(en )
1941-07-01
Calculating machine
US2710139A
(en )
1955-06-07
Swanson
US3076597A
(en )
1963-02-05
Gelling
US2780407A
(en )
1957-02-05
Carriage control means for listing calculators
US3057549A
(en )
1962-10-09
wagemann
US3194496A
(en )
1965-07-13
Pin carriage to clutch interlock mechanism in a ten-key adding and subtracting machine
US2581624A
(en )
1952-01-08
Early factor mechanism
US2459441A
(en )
1949-01-18
Computing machine
US1939804A
(en )
1933-12-19
Combined adding machine and typewriter
US1773026A
(en )
1930-08-12
For calculators
US2987243A
(en )
1961-06-06
Read-in decoding translator for lister calculators
US3281069A
(en )
1966-10-25
Credit balance transfer mechanism for ten-key
adding and subtracting machine
US2749033A
(en )
1956-06-05
Latour
US3072329A
(en )
1963-01-08
Control for motor operated business machines
US2520070A
(en )
1950-08-22
Accounting machine
US3370788A
(en )
1968-02-27
Program control device for a calculating or like machine
US2570931A
(en )
1951-10-09
Printing tabulating mechanism
US3374946A
(en )
1968-03-26
Computer for multiplication with abbreviated,continual addition or subtraction
US2046329A
(en )
1936-07-07
Calculating machine
US3011699A
(en )
1961-12-05
Repeat control mechanism for cash registers and accounting machines
GB191109563A
(en )
1912-06-19
Improvements in and relating to Multiplying Arrangements for Calculating Machines.
US2225484A
(en )
1940-12-17
Combined typewriting and computing machine
US1030975A
(en )
1912-07-02
Calculating-machine.