GB1330233A
(en )
1973-09-12
Latching apparatus
GB314789A
(https= )
US2935166A
(en )
1960-05-03
Motor reversing means for calculating machines
US3115963A
(en )
1963-12-31
Record material feeding mechanism
GB1048275A
(en )
1966-11-16
Improvements in or relating to keyboard mechanism for an electric writing machine
US2810466A
(en )
1957-10-22
Operation controlling mechanism for typewriters or like machines
US2252004A
(en )
1941-08-12
Typewriting machine
GB425691A
(en )
1935-03-20
Improvements in or relating to power operated typewriters
US1781689A
(en )
1930-11-18
Controlling mechanism for power-driven calculating machines
US2945577A
(en )
1960-07-19
Keyboard lock mechanism
US3814228A
(en )
1974-06-04
Repeat mechanism for a printer
US3827542A
(en )
1974-08-06
Character storage arrangement for a powered typewriter action
US2109063A
(en )
1938-02-22
Motor drive mechanism
GB216142A
(en )
1925-08-14
Improvements in or relating to statistical machines
US2163968A
(en )
1939-06-27
Typewriting machine
US2919006A
(en )
1959-12-29
Control for power-operated office machines
US2362709A
(en )
1944-11-14
Calculating machine
US1791899A
(en )
1931-02-10
Xwtlhelm k khopff
US3698530A
(en )
1972-10-17
Case shift control apparatus operable by a case shift key and by type keys
US2590335A
(en )
1952-03-25
Selective keyboard clearing means
US1921159A
(en )
1933-08-08
Power actuated typewriter
GB265135A
(https= )
US1984723A
(en )
1934-12-18
Locking mechanism fob calculating
US2731206A
(en )
1956-01-17
Calculating machine function control keys interlock
GB191213315A
(en )
1913-06-05
Improvements in Motor-operating and Key-locking Mechanisms for Combined Typewriting and Computing Machines.