GB408633A
(enrdf_load_stackoverflow )
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
US2139718A
(en )
1938-12-13
Cash register
US3008637A
(en )
1961-11-14
Complemental keyboard
US2199253A
(en )
1940-04-30
Transfer mechanism for key-set
GB368117A
(enrdf_load_stackoverflow )
GB413373A
(enrdf_load_stackoverflow )
GB491465A
(enrdf_load_stackoverflow )
GB509444A
(enrdf_load_stackoverflow )
GB219923A
(enrdf_load_stackoverflow )
GB509441A
(enrdf_load_stackoverflow )
GB496720A
(enrdf_load_stackoverflow )
GB389630A
(enrdf_load_stackoverflow )
1900-01-01
GB600446A
(enrdf_load_stackoverflow )
GB207858A
(enrdf_load_stackoverflow )
GB406676A
(enrdf_load_stackoverflow )
GB697928A
(enrdf_load_stackoverflow )
1900-01-01
GB469034A
(enrdf_load_stackoverflow )
GB729820A
(enrdf_load_stackoverflow )
GB516693A
(enrdf_load_stackoverflow )
GB516535A
(enrdf_load_stackoverflow )
GB191107105A
(en )
1911-08-09
Improvements in and relating to Adding Mechanism for Cash Registers and the like.
GB712750A
(en )
1954-07-28
Improvements in or relating to calculating machines
GB417991A
(enrdf_load_stackoverflow )
1900-01-01
GB783849A
(enrdf_load_stackoverflow )