GB124692A
(enrdf_load_stackoverflow )
GB850492A
(en )
1960-10-05
Tape punching apparatus for accounting machines and the like
US3057549A
(en )
1962-10-09
wagemann
US2710139A
(en )
1955-06-07
Swanson
US3281069A
(en )
1966-10-25
Credit balance transfer mechanism for ten-key
adding and subtracting machine
US2749033A
(en )
1956-06-05
Latour
US3194496A
(en )
1965-07-13
Pin carriage to clutch interlock mechanism in a ten-key adding and subtracting machine
GB758567A
(en )
1956-10-03
Alphabetic interpreter
US2570931A
(en )
1951-10-09
Printing tabulating mechanism
GB191026858A
(en )
1911-11-20
Improvements in Typographical Adding and like Calculating Machines.
US3459371A
(en )
1969-08-05
Arresting mechanism for result printer in calculator having multiplication facility
US3722794A
(en )
1973-03-27
Value input mechanism for ten key calculating machines
US2906454A
(en )
1959-09-29
Ten-key calculating machine
GB124694A
(enrdf_load_stackoverflow )
US3474957A
(en )
1969-10-28
Actuating mechanism for result key in calculator having multiplication facility
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB185079A
(enrdf_load_stackoverflow )
GB687582A
(enrdf_load_stackoverflow )
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB854504A
(en )
1960-11-23
Improvements in power-actuated typewriting calculating machines with tape-punch attachment
GB431623A
(enrdf_load_stackoverflow )
GB753841A
(enrdf_load_stackoverflow )
GB124693A
(enrdf_load_stackoverflow )
GB769625A
(enrdf_load_stackoverflow )
GB313513A
(enrdf_load_stackoverflow )