GB147765A
(enrdf_load_stackoverflow )
US2416809A
(en )
1947-03-04
Selective normalizing mechanisms
US2160361A
(en )
1939-05-30
Calculating machine
US3379075A
(en )
1968-04-23
Pawl mechanisms
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
US2733858A
(en )
1956-02-07
anderson
GB461423A
(enrdf_load_stackoverflow )
GB551311A
(enrdf_load_stackoverflow )
GB413205A
(enrdf_load_stackoverflow )
1900-01-01
US821428A
(en )
1906-05-22
Computing attachment for type-writing machines.
US3263917A
(en )
1966-08-02
Normalizing means for calculating machines
GB451011A
(enrdf_load_stackoverflow )
GB171475A
(enrdf_load_stackoverflow )
GB657604A
(en )
1951-09-19
Improvements in or relating to accounting and similar calculating machines
US3477640A
(en )
1969-11-11
Division terminating mechanism
US1432759A
(en )
1922-10-24
Typewriter word counter
GB483093A
(enrdf_load_stackoverflow )
GB416870A
(enrdf_load_stackoverflow )
GB204758A
(enrdf_load_stackoverflow )
GB294468A
(enrdf_load_stackoverflow )
GB814171A
(enrdf_load_stackoverflow )
GB330292A
(en )
1930-06-02
Improvements in cash registers
GB713873A
(enrdf_load_stackoverflow )
GB344393A
(enrdf_load_stackoverflow )
GB217107A
(enrdf_load_stackoverflow )