GB550978A
(en )
1943-02-03
Improvements in or relating to calculating or similar accounting machines
GB295632A
(enrdf_load_stackoverflow )
US2087182A
(en )
1937-07-13
Listing adding machine
GB417991A
(enrdf_load_stackoverflow )
1900-01-01
GB334727A
(enrdf_load_stackoverflow )
GB497640A
(enrdf_load_stackoverflow )
GB672771A
(enrdf_load_stackoverflow )
GB394999A
(enrdf_load_stackoverflow )
GB509042A
(enrdf_load_stackoverflow )
GB191311823A
(en )
1914-03-05
Improvements in and relating to Adding and Listing Machines.
GB190929891A
(en )
1910-03-29
Improvements in and relating to Mechanical Calculators.
GB617346A
(enrdf_load_stackoverflow )
GB628636A
(enrdf_load_stackoverflow )
GB337478A
(enrdf_load_stackoverflow )
GB344393A
(enrdf_load_stackoverflow )
GB228184A
(enrdf_load_stackoverflow )
GB483113A
(enrdf_load_stackoverflow )
GB293080A
(enrdf_load_stackoverflow )
GB191417946A
(en )
1915-04-06
Improvements in Adding Machines.
GB483112A
(enrdf_load_stackoverflow )
GB241213A
(enrdf_load_stackoverflow )
GB912785A
(en )
1962-12-12
Accounting or similar calculating machines
GB600446A
(enrdf_load_stackoverflow )
GB483093A
(enrdf_load_stackoverflow )
GB451011A
(enrdf_load_stackoverflow )