GB1330233A
(en )
1973-09-12
Latching apparatus
GB314789A
(enExample )
US2935166A
(en )
1960-05-03
Motor reversing means for calculating machines
US3115963A
(en )
1963-12-31
Record material feeding mechanism
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
US3021934A
(en )
1962-02-20
Type action
US2109063A
(en )
1938-02-22
Motor drive mechanism
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
US1853055A
(en )
1932-04-12
Electric drive for calculating machines
US2590335A
(en )
1952-03-25
Selective keyboard clearing means
US3578132A
(en )
1971-05-11
Half-space carriage return mechanism for typewriters
GB265135A
(enExample )
US1984723A
(en )
1934-12-18
Locking mechanism fob calculating
US2731206A
(en )
1956-01-17
Calculating machine function control keys interlock
US2321013A
(en )
1943-06-08
Listing adding machine
GB191213315A
(en )
1913-06-05
Improvements in Motor-operating and Key-locking Mechanisms for Combined Typewriting and Computing Machines.
GB551311A
(enExample )