GB539306A
(enExample )
US2230682A
(en )
1941-02-04
Interlock for cash registers
GB982721A
(en )
1965-02-10
Adding machine
US2298201A
(en )
1942-10-06
Listing calculator
GB348105A
(enExample )
GB497640A
(enExample )
US2330270A
(en )
1943-09-28
Register
US1601398A
(en )
1926-09-28
- cincinnati
GB737050A
(en )
1955-09-21
Computing machine
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB191109563A
(en )
1912-06-19
Improvements in and relating to Multiplying Arrangements for Calculating Machines.
GB295632A
(enExample )
GB436540A
(en )
1935-10-14
Improvements in or relating to calculating machines, accounting machines and similarmachines
GB672771A
(enExample )
GB205870A
(en )
1923-10-24
Improvements in or relating to calculating machines
GB241213A
(enExample )
GB190929891A
(en )
1910-03-29
Improvements in and relating to Mechanical Calculators.
GB423169A
(en )
1935-01-24
Improvements in or relating to calculating and the like machines
GB438369A
(enExample )
GB606627A
(enExample )
GB295678A
(enExample )
GB259267A
(enExample )
GB191210902A
(en )
1913-06-09
Combined Typewriting and Computing Machine.
GB202265A
(enExample )
1924-04-22
GB496720A
(enExample )