GB672771A
(enExample )
GB1082776A
(en )
1967-09-13
Keyboard mechanism for generating code combinations
US2593666A
(en )
1952-04-22
Key lock means for cash reg
US2992773A
(en )
1961-07-18
Multiplication mechanism for adding machines
GB191421089A
(en )
1915-09-30
Improvements in or relating to Calculating Machines.
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB295632A
(enExample )
GB1122887A
(en )
1968-08-07
A data entry machine
GB487494A
(enExample )
GB417991A
(enExample )
1900-01-01
GB732760A
(enExample )
US1601398A
(en )
1926-09-28
- cincinnati
GB709181A
(enExample )
GB606629A
(enExample )
GB514291A
(enExample )
GB675363A
(enExample )
GB191030391A
(en )
1911-12-14
Improvements in Calculating Machines.
GB652232A
(enExample )
GB191311823A
(en )
1914-03-05
Improvements in and relating to Adding and Listing Machines.
GB469028A
(enExample )
GB401904A
(enExample )
GB803969A
(enExample )
GB191309102A
(en )
1914-05-18
Improvements in or relating to Adding, Listing and like Machines.
GB373131A
(enExample )
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.