GB185079A
(enrdf_load_stackoverflow )
GB1172819A
(en )
1969-12-03
Keyboard Mechanisms.
GB1082776A
(en )
1967-09-13
Keyboard mechanism for generating code combinations
GB406703A
(en )
1934-03-03
Improvements in telegraph keyboard controlled apparatus
US2656980A
(en )
1953-10-27
Key operating means for computing machines
GB1243640A
(en )
1971-08-25
Selectively operable mechanism for keyboard operating machines
GB1154111A
(en )
1969-06-04
Encoder.
US2890782A
(en )
1959-06-16
Adjusting device for spring-loaded key levers
US3000486A
(en )
1961-09-19
Ciphering machine
US2868445A
(en )
1959-01-13
Repeat addition mechanism for ten key adding machine
GB124692A
(enrdf_load_stackoverflow )
US3084855A
(en )
1963-04-09
Ten-key adding machine fo r non-uniform
US1492548A
(en )
1924-04-29
Typewriter and like keyboard mechanism
GB191105283A
(en )
1911-11-30
Improvements in Calculating Machines.
GB799137A
(en )
1958-08-06
Improvements in contact keyboards for controlling typewriters and calculating, accounting and like machines
US2111862A
(en )
1938-03-22
Stop operating mechanism
GB243647A
(enrdf_load_stackoverflow )
GB146792A
(enrdf_load_stackoverflow )
GB929567A
(en )
1963-06-26
Improvements in and relating to ten key adding listing machines
GB731620A
(en )
1955-06-08
Calculating machine
US3722794A
(en )
1973-03-27
Value input mechanism for ten key calculating machines
GB308461A
(en )
1929-03-28
Improvements relating to platen-shift mechanism of typewriting machines
GB989869A
(en )
1965-04-22
Print impression control mechanism
GB190921023A
(en )
1910-03-03
Improvements in and connected with Calculating Machines.
GB191421089A
(en )
1915-09-30
Improvements in or relating to Calculating Machines.