US2087182A
(en )
1937-07-13
Listing adding machine
GB509747A
(enrdf_load_stackoverflow )
US2754052A
(en )
1956-07-10
Capellaro
US2330689A
(en )
1943-09-28
Register
GB518840A
(enrdf_load_stackoverflow )
US2992773A
(en )
1961-07-18
Multiplication mechanism for adding machines
US2261341A
(en )
1941-11-04
Adding and listing machine
US1915296A
(en )
1933-06-27
crosman
US2570931A
(en )
1951-10-09
Printing tabulating mechanism
US3370788A
(en )
1968-02-27
Program control device for a calculating or like machine
US3476313A
(en )
1969-11-04
Calculating machine with short cut multiplication
US3194496A
(en )
1965-07-13
Pin carriage to clutch interlock mechanism in a ten-key adding and subtracting machine
US2749033A
(en )
1956-06-05
Latour
GB787507A
(enrdf_load_stackoverflow )
GB718412A
(enrdf_load_stackoverflow )
GB753841A
(enrdf_load_stackoverflow )
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
US3419212A
(en )
1968-12-31
Calculating mechanisms for calculating machines
GB191203390A
(en )
1913-02-06
Combined Typewriter and Computing Machine.
GB406152A
(enrdf_load_stackoverflow )
1900-01-01
GB469028A
(enrdf_load_stackoverflow )
GB721535A
(enrdf_load_stackoverflow )
US3331556A
(en )
1967-07-18
Power driving device for a calculating machine
USRE17466E
(en )
1929-10-22
chase
US2994474A
(en )
1961-08-01
fleming