GB169983A
(enrdf_load_stackoverflow )
US3241756A
(en )
1966-03-22
Printing mechanism for calculating machines
US2975789A
(en )
1961-03-21
Currency dispensing apparatus
US2702668A
(en )
1955-02-22
dustin
US2665070A
(en )
1954-01-05
Binary-octal-decimal computer
US3017088A
(en )
1962-01-16
Calculating machines
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
US2063740A
(en )
1936-12-08
Calculating machine
US462365A
(en )
1891-11-03
Thomas pink
US2896846A
(en )
1959-07-28
Ttnttpn statps patpnts
US3667670A
(en )
1972-06-06
Adding machine with printing device
GB146792A
(enrdf_load_stackoverflow )
US673625A
(en )
1901-05-07
Cash-register.
GB368117A
(enrdf_load_stackoverflow )
GB191017958A
(en )
1911-03-02
A Calculating Machine, especially intended for Effecting Multiplication.
US3474957A
(en )
1969-10-28
Actuating mechanism for result key in calculator having multiplication facility
GB607674A
(enrdf_load_stackoverflow )
GB686541A
(enrdf_load_stackoverflow )
GB242390A
(enrdf_load_stackoverflow )
GB190826763A
(en )
1909-12-09
Improvements in Apparatus for Adding or Calculating.
GB605591A
(enrdf_load_stackoverflow )
GB430745A
(enrdf_load_stackoverflow )
GB191011810A
(en )
1911-03-09
Improvements in Calculating Machines.
GB474405A
(enrdf_load_stackoverflow )
GB757113A
(enrdf_load_stackoverflow )