GB539306A
(enrdf_load_stackoverflow )
US2230682A
(en )
1941-02-04
Interlock for cash registers
GB982721A
(en )
1965-02-10
Adding machine
US2298201A
(en )
1942-10-06
Listing calculator
GB348105A
(enrdf_load_stackoverflow )
GB497640A
(enrdf_load_stackoverflow )
US2330270A
(en )
1943-09-28
Register
US1601398A
(en )
1926-09-28
- cincinnati
GB737050A
(en )
1955-09-21
Computing machine
GB128965A
(en )
1919-07-10
Improvements in Adding Machines.
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
(enrdf_load_stackoverflow )
GB506500A
(enrdf_load_stackoverflow )
GB436540A
(en )
1935-10-14
Improvements in or relating to calculating machines, accounting machines and similarmachines
GB672771A
(enrdf_load_stackoverflow )
GB245186A
(enrdf_load_stackoverflow )
1900-01-01
GB205870A
(en )
1923-10-24
Improvements in or relating to calculating machines
GB241213A
(enrdf_load_stackoverflow )
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
(enrdf_load_stackoverflow )
GB146285A
(en )
1921-12-28
Improvements in and relating to item printing arrangements for calculating machines
GB606627A
(enrdf_load_stackoverflow )
GB295678A
(enrdf_load_stackoverflow )