GB427722A
(enrdf_load_stackoverflow )
US1987015A
(en )
1935-01-08
Overdraft control of ribbon mechanism
US2079355A
(en )
1937-05-04
Automatic overdraft device for
US3323717A
(en )
1967-06-06
Control device for a ten key adding printing machine
US2202948A
(en )
1940-06-04
Calculating machine
GB498753A
(en )
1939-01-09
Improvements in or relating to cash registers and similar accounting machines
US1794464A
(en )
1931-03-03
Combined typewriting anb computing machine
US2433679A
(en )
1947-12-30
Indian currency computing and recording calculator
US1883892A
(en )
1932-10-25
Walther flach
US2038717A
(en )
1936-04-28
Calculating machine
US1396348A
(en )
1921-11-08
Combined typewriting and computing machine
US1294704A
(en )
1919-02-18
Elimination and special-signal mechanism.
US1958464A
(en )
1934-05-15
Check writing machine
US2317086A
(en )
1943-04-20
Calculating machine
GB497640A
(enrdf_load_stackoverflow )
US1256308A
(en )
1918-02-12
Combined type-writing and computing machine.
US2027449A
(en )
1936-01-14
Calculating machine and cash
GB395688A
(enrdf_load_stackoverflow )
US1747680A
(en )
1930-02-18
Combined typewriting and computing machine
GB438369A
(enrdf_load_stackoverflow )
US1370022A
(en )
1921-03-01
Combined typewriting and computing machine
US2170183A
(en )
1939-08-22
Cash register and accounting
GB420807A
(enrdf_load_stackoverflow )
1900-01-01
US2289403A
(en )
1942-07-14
Accounting machine
US1804232A
(en )
1931-05-05
Combined typewriting and computing machine