GB298114A
(enExample )
GB496720A
(enExample )
GB925165A
(enExample )
GB190724489A
(en )
1908-11-05
Improvements in Adding Machines.
GB1122887A
(en )
1968-08-07
A data entry machine
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB757113A
(enExample )
GB146792A
(enExample )
GB169983A
(enExample )
GB148235A
(en )
1921-01-06
Improvements in practice-key boards
GB191017472A
(en )
1911-02-07
Improvements in or relating to Cash Registers.
GB612392A
(en )
1948-11-11
Improvements in or relating to accounting machines and similar calculating machines
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB543965A
(enExample )
GB462320A
(enExample )
GB190409956A
(en )
1904-11-10
Improvements in Cash Registers.
GB191318763A
(en )
Improvements in or relating to Subtraction Devices for Self-writing Adding Machines.
GB660642A
(enExample )
GB305579A
(enExample )
GB190922862A
(en )
1909-12-10
Improvements in Apparatus for Adding or Calculating.
GB178847A
(enExample )
GB613616A
(enExample )
GB699914A
(en )
1953-11-18
Improvements in or relating to calculating machines
GB413304A
(enExample )
GB143339A
(en )
1920-05-27
Machine for simultaneously printing amounts in figures and words on dividend warrants, cheques, receipts and the like