GB623457A
(enrdf_load_stackoverflow )
1900-01-01
US1916611A
(en )
1933-07-04
Fornia
GB190724490A
(en )
1908-12-03
Improvements in Adding Machines.
US2628780A
(en )
1953-02-17
Zero stop mechanism
US1440145A
(en )
1922-12-26
Calculating machine
GB697928A
(enrdf_load_stackoverflow )
1900-01-01
GB335213A
(enrdf_load_stackoverflow )
GB680288A
(enrdf_load_stackoverflow )
GB1122887A
(en )
1968-08-07
A data entry machine
US480616A
(en )
1892-08-09
Cash-register
GB417991A
(enrdf_load_stackoverflow )
1900-01-01
US1100929A
(en )
1914-06-23
Calculating-machine.
GB208232A
(enrdf_load_stackoverflow )
US700479A
(en )
1902-05-20
Cash-register.
US838942A
(en )
1906-12-18
Cash-register.
US2809788A
(en )
1957-10-15
Calculating machines
US1740629A
(en )
1929-12-24
of dayton
GB191407449A
(en )
1915-04-26
Improvements in or relating to Combined Adding or Registering Mechanism and Filing Appliances.
GB191504131A
(en )
1916-03-16
Improvements in or relating to Calculating Machines.
GB190505115A
(en )
1905-12-07
Improvements in Calculating Machines.
GB600746A
(en )
1948-04-16
Improvements in or relating to calculating machines
GB190922464A
(en )
1910-09-29
Improvements in or relating to Adding and Listing Machines.
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.
GB191106386A
(en )
1911-09-07
Improvements in and relating to Calculating Machines.
GB190922862A
(en )
1909-12-10
Improvements in Apparatus for Adding or Calculating.