GB203082A
(https= )
GB643868A
(en )
1950-09-27
Typewriting machine
US2577395A
(en )
1951-12-04
Autographic eegister
GB1064940A
(en )
1967-04-12
Zero printing control device for a calculating machine
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB285885A
(https= )
US904982A
(en )
1908-11-24
Type-writing machine.
US1456660A
(en )
1923-05-29
Habby h
US2854123A
(en )
1958-09-30
Power operated tabulating mechanism
US2248202A
(en )
1941-07-08
Combined typewriting and computing
US1043882A
(en )
1912-11-12
Adding-machine.
US2055623A
(en )
1936-09-29
Calculating machine
US3331556A
(en )
1967-07-18
Power driving device for a calculating machine
GB457273A
(https= )
US973226A
(en )
1910-10-18
Type-writing machine.
GB474938A
(https= )
US1442576A
(en )
1923-01-16
Combined typewriting and computing machine
GB732239A
(https= )
GB190930426A
(en )
1911-01-30
Improvements in the Column Printing and Denomination Selecting Arrangements of Computing Attachments for Typewriters.
GB488660A
(https= )
GB628636A
(https= )
GB409101A
(https= )
GB191027151A
(en )
1911-09-28
Improvements in Calculating Machines.
GB629975A
(https= )
GB721759A
(en )
1955-01-12
Improvements in or relating to printing mechanisms for record controlled statisticalmachines