US2427992A
(en )
1947-09-23
One revolution teip means
GB773004A
(enExample )
US2499946A
(en )
1950-03-07
Carrying mechanism for calculating
GB700946A
(enExample )
US2078075A
(en )
1937-04-20
Typewriting machine
GB173195A
(enExample )
GB693659A
(enExample )
GB600150A
(en )
1948-04-01
Improvements relating to indexing mechanisms for machine tools
GB283486A
(enExample )
US2369974A
(en )
1945-02-20
Transfer mechanism for calculating
GB172917A
(enExample )
GB765291A
(enExample )
GB642090A
(en )
1950-08-30
Keyboard impulse transmitter for step-by-step printing telegraph
GB527786A
(en )
1940-10-16
Improvements in or relating to cash registers or similar accounting machines
GB401825A
(enExample )
GB558333A
(enExample )
GB850622A
(enExample )
GB674822A
(enExample )
GB190433A
(enExample )
GB451011A
(enExample )
GB470728A
(enExample )
GB808192A
(enExample )
GB657604A
(en )
1951-09-19
Improvements in or relating to accounting and similar calculating machines
GB154248A
(en )
1920-11-29
Improvements in and relating to calculating machines
GB1154981A
(en )
1969-06-11
Justification Device for a Variable Spacing Typewriter