GB462320A
(enExample )
GB1082776A
(en )
1967-09-13
Keyboard mechanism for generating code combinations
GB672804A
(enExample )
GB672771A
(enExample )
GB344054A
(enExample )
GB1122887A
(en )
1968-08-07
A data entry machine
GB298114A
(enExample )
GB652232A
(enExample )
GB191111199A
(en )
1911-10-26
Improvements in and relating to Sash-locks.
GB395688A
(enExample )
GB269928A
(enExample )
GB608988A
(enExample )
GB732760A
(enExample )
GB445540A
(enExample )
GB1243640A
(en )
1971-08-25
Selectively operable mechanism for keyboard operating machines
US3027077A
(en )
1962-03-27
Operation control mechanism for cash registers
GB548465A
(enExample )
GB537502A
(enExample )
GB295632A
(enExample )
GB731620A
(en )
1955-06-08
Calculating machine
GB191120332A
(en )
1912-09-12
Improvements in and relating to Cash Registers.
GB190922862A
(en )
1909-12-10
Improvements in Apparatus for Adding or Calculating.
GB496720A
(enExample )
GB427792A
(enExample )
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.