GB672771A
(https= )
GB1082776A
(en )
1967-09-13
Keyboard mechanism for generating code combinations
US2593666A
(en )
1952-04-22
Key lock means for cash reg
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
(https= )
GB1122887A
(en )
1968-08-07
A data entry machine
GB487494A
(https= )
GB417991A
(https= )
1900-01-01
GB732760A
(https= )
US1601398A
(en )
1926-09-28
- cincinnati
GB709181A
(https= )
GB606629A
(https= )
GB514291A
(https= )
GB675363A
(https= )
GB191030391A
(en )
1911-12-14
Improvements in Calculating Machines.
GB652232A
(https= )
GB191311823A
(en )
1914-03-05
Improvements in and relating to Adding and Listing Machines.
GB401904A
(https= )
GB191026858A
(en )
1911-11-20
Improvements in Typographical Adding and like Calculating Machines.
GB803969A
(https= )
GB191309102A
(en )
1914-05-18
Improvements in or relating to Adding, Listing and like Machines.
GB373131A
(https= )
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB191119694A
(en )
1912-09-04
Adding and Computing Machine.