GB550978A
(en )
1943-02-03
Improvements in or relating to calculating or similar accounting machines
GB652232A
(enExample )
GB672771A
(enExample )
US2992773A
(en )
1961-07-18
Multiplication mechanism for adding machines
GB166486A
(enExample )
GB933003A
(en )
1963-07-31
Setting mechanism for computing machines
GB479234A
(enExample )
1900-01-01
GB803969A
(enExample )
GB709181A
(enExample )
GB1139925A
(en )
1969-01-15
Program control device for a calculating or like machine
GB191030391A
(en )
1911-12-14
Improvements in Calculating Machines.
GB686524A
(enExample )
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB875275A
(enExample )
1900-01-01
GB753841A
(enExample )
GB368311A
(enExample )
US1892614A
(en )
1932-12-27
renders
GB600446A
(enExample )
GB146792A
(enExample )
GB487494A
(enExample )
GB298114A
(enExample )
GB191017472A
(en )
1911-02-07
Improvements in or relating to Cash Registers.
GB462320A
(enExample )
GB699914A
(en )
1953-11-18
Improvements in or relating to calculating machines
GB1055365A
(enExample )