GB344393A
(enrdf_load_stackoverflow )
US2285311A
(en )
1942-06-02
Accounting machine
US2570931A
(en )
1951-10-09
Printing tabulating mechanism
US1840535A
(en )
1932-01-12
shipley
GB394999A
(enrdf_load_stackoverflow )
GB660615A
(enrdf_load_stackoverflow )
US2809782A
(en )
1957-10-15
fleming
GB191121592A
(en )
1912-09-26
Improvements in or relating to Adding Machines.
GB408795A
(en )
1934-04-19
Improvements in or relating to calculating and/or check writing machines
GB483113A
(enrdf_load_stackoverflow )
GB499027A
(enrdf_load_stackoverflow )
GB305579A
(enrdf_load_stackoverflow )
GB138077A
(enrdf_load_stackoverflow )
GB438369A
(enrdf_load_stackoverflow )
GB607744A
(enrdf_load_stackoverflow )
GB648390A
(enrdf_load_stackoverflow )
GB295632A
(enrdf_load_stackoverflow )
GB417991A
(enrdf_load_stackoverflow )
1900-01-01
GB191026858A
(en )
1911-11-20
Improvements in Typographical Adding and like Calculating Machines.
GB434369A
(enrdf_load_stackoverflow )
GB608989A
(en )
1948-09-23
Improvements in calculating machines
GB497640A
(enrdf_load_stackoverflow )
GB191203390A
(en )
1913-02-06
Combined Typewriter and Computing Machine.
GB537735A
(enrdf_load_stackoverflow )
GB732239A
(enrdf_load_stackoverflow )