GB855127A
(en )
1960-11-30
Improvements in typewriters
GB499826A
(https= )
SE307142B
(https= )
1968-12-23
US2728436A
(en )
1955-12-27
Power operated repeat carriage letter spacing mechanism for typewriters or like machines
GB425691A
(en )
1935-03-20
Improvements in or relating to power operated typewriters
US3586150A
(en )
1971-06-22
Tabulator safety apparatus
GB1088179A
(en )
1967-10-25
Function operating device for an electric typewriter
US887745A
(en )
1908-05-19
Type-writer key and type-bar mechanism.
US2854123A
(en )
1958-09-30
Power operated tabulating mechanism
GB283486A
(https= )
US1302032A
(en )
1919-04-29
Combined type-writing and computing machine.
GB203082A
(https= )
GB462331A
(https= )
GB482616A
(en )
1938-04-01
Mechanism for advancement of the carriage of typewriters
US1011722A
(en )
1911-12-12
Type-writing machine.
GB275506A
(en )
1927-08-11
Improvements in back-spacing mechanism for typewriting machines
GB463512A
(https= )
GB939893A
(https= )
GB555659A
(en )
1943-09-01
Improvements in or relating to calculating or like machines
GB191020978A
(en )
1911-02-23
Improvements in Escapement Mechanism for Typewriting Machines.
GB439838A
(https= )
GB461347A
(https= )
GB459812A
(https= )
GB191300560A
(en )
1914-03-09
Improvements in Keyboard Machines for Embossing.
GB447485A
(https= )