GB261916A
(https= )
GB943821A
(en )
1963-12-04
A cash register or similar accounting machine
GB660263A
(en )
1951-11-07
Improvements in or relating to power mechanism for typewriters and like machines
GB688289A
(en )
1953-03-04
Power operated typewriter
US2139719A
(en )
1938-12-13
Cash register
US2284803A
(en )
1942-06-02
Listing adding machine
US2971625A
(en )
1961-02-14
Repeat actuation arrangement for typewriters
US2728437A
(en )
1955-12-27
Back spacing mechanism for typewriters or like machines
US2261341A
(en )
1941-11-04
Adding and listing machine
US2858925A
(en )
1958-11-04
Keyboard touch device
US1846339A
(en )
1932-02-23
Typewriting machine
GB459812A
(https= )
GB581590A
(en )
1946-10-17
Improvements in typewriters and like machines
US1946602A
(en )
1934-02-13
Cash register
US2476917A
(en )
1949-07-19
Forward and reverse line spacing device for typewriters
GB571740A
(en )
1945-09-06
Typewriting machines
GB173195A
(https= )
GB367973A
(https= )
GB545438A
(https= )
GB439838A
(https= )
GB373157A
(https= )
GB294468A
(https= )
GB540315A
(https= )
GB190928898A
(en )
1910-03-29
Improvements in and relating to Printing Devices suitable for Mechanical Calculators.
GB536405A
(https= )