GB160374A
(enrdf_load_stackoverflow )
US2986993A
(en )
1961-06-06
H gang
US2636679A
(en )
1953-04-28
Keyboard clearing mechanism
GB612392A
(en )
1948-11-11
Improvements in or relating to accounting machines and similar calculating machines
US1172484A
(en )
1916-02-22
Adding and listing machine.
GB749504A
(enrdf_load_stackoverflow )
GB191501533A
(en )
1915-06-10
Improvements in Non-print, Non-compute Mechanism for Typographical Computing Machines.
GB150735A
(enrdf_load_stackoverflow )
GB743554A
(enrdf_load_stackoverflow )
GB471018A
(enrdf_load_stackoverflow )
GB741957A
(enrdf_load_stackoverflow )
GB749134A
(enrdf_load_stackoverflow )
GB420807A
(enrdf_load_stackoverflow )
1900-01-01
GB190922862A
(en )
1909-12-10
Improvements in Apparatus for Adding or Calculating.
GB190524014A
(en )
1906-11-08
Improvements in Cash Registers
GB713873A
(enrdf_load_stackoverflow )
GB925622A
(enrdf_load_stackoverflow )
GB598524A
(enrdf_load_stackoverflow )
GB672804A
(enrdf_load_stackoverflow )
GB668507A
(enrdf_load_stackoverflow )
GB652285A
(enrdf_load_stackoverflow )
GB190722377A
(en )
1908-08-20
Improvements in and relating to Cash-registers.
GB175581A
(en )
1922-02-13
Improvements in or relating to calculating machines and printing mechanism therefor
GB265122A
(enrdf_load_stackoverflow )
GB190605557A
(en )
1907-02-07
Improvements in or relating to Calculating Apparatus applicable to Typewriters.