US2071141A
(en )
1937-02-16
Joht doe
GB1113936A
(enrdf_load_stackoverflow )
US2079355A
(en )
1937-05-04
Automatic overdraft device for
US3323717A
(en )
1967-06-06
Control device for a ten key adding printing machine
US2202948A
(en )
1940-06-04
Calculating machine
GB427722A
(enrdf_load_stackoverflow )
US1913510A
(en )
1933-06-13
Calculating machine
US2038717A
(en )
1936-04-28
Calculating machine
GB147762A
(en )
1921-08-04
Improvements in or relating to calculating machines
US1601398A
(en )
1926-09-28
- cincinnati
GB438369A
(enrdf_load_stackoverflow )
US1761555A
(en )
1930-06-03
A cqbposation of mary
US2134683A
(en )
1938-11-01
Calculating machine
US963727A
(en )
1910-07-05
Calculating attachment for type-writing machines.
US1311884A
(en )
1919-08-05
Registering and recording mechanish
US1755504A
(en )
1930-04-22
Case register
GB190524014A
(en )
1906-11-08
Improvements in Cash Registers
GB285885A
(enrdf_load_stackoverflow )
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB190828253A
(en )
1909-12-28
Improvements in and relating to Mechanical Calculators.
GB457273A
(enrdf_load_stackoverflow )
GB420807A
(enrdf_load_stackoverflow )
1900-01-01
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB191200442A
(en )
1913-01-06
Improvements in or relating to Adding or like Machines.
GB470493A
(enrdf_load_stackoverflow )