GB804234A
(enrdf_load_stackoverflow )
US2467441A
(en )
1949-04-19
Early value setting mechanism
US3086701A
(en )
1963-04-23
Capellaro
GB933003A
(en )
1963-07-31
Setting mechanism for computing machines
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
GB253734A
(enrdf_load_stackoverflow )
GB496720A
(enrdf_load_stackoverflow )
GB1122887A
(en )
1968-08-07
A data entry machine
GB537502A
(enrdf_load_stackoverflow )
GB146273A
(en )
1921-10-24
Improvements in and relating to keyboard setting mechanism for adding-machines
US2291949A
(en )
1942-08-04
Listing adding machine
GB955536A
(enrdf_load_stackoverflow )
US3600555A
(en )
1971-08-17
Dual function motor key for calculators
GB166488A
(enrdf_load_stackoverflow )
GB368117A
(enrdf_load_stackoverflow )
GB528083A
(enrdf_load_stackoverflow )
GB904426A
(en )
1962-08-29
Cash registers and similar accounting machines
GB753841A
(enrdf_load_stackoverflow )
GB274344A
(enrdf_load_stackoverflow )
GB313513A
(enrdf_load_stackoverflow )
GB208232A
(enrdf_load_stackoverflow )
GB783849A
(enrdf_load_stackoverflow )
GB697928A
(enrdf_load_stackoverflow )
1900-01-01
GB413304A
(enrdf_load_stackoverflow )
GB613616A
(enrdf_load_stackoverflow )