US3623012A
(en )
1971-11-23
Accounting system with program by example facilities
GB351086A
(https= )
US2974860A
(en )
1961-03-14
Balance totalizer control means for
US2088434A
(en )
1937-07-27
Calculating machine
US2675175A
(en )
1954-04-13
Indian currency adding machine
US2853232A
(en )
1958-09-23
Change computing cash register
GB498753A
(en )
1939-01-09
Improvements in or relating to cash registers and similar accounting machines
US2868446A
(en )
1959-01-13
harbor
US2202948A
(en )
1940-06-04
Calculating machine
US2725818A
(en )
1955-12-06
A parsons
US2345839A
(en )
1944-04-04
Accounting machine
US2347607A
(en )
1944-04-25
Calculating machine
US3047219A
(en )
1962-07-31
Selective amount transfer control mechanism
GB427722A
(https= )
US2317086A
(en )
1943-04-20
Calculating machine
US2052044A
(en )
1936-08-25
Totalizer and keyboard capacity
US1794464A
(en )
1931-03-03
Combined typewriting anb computing machine
US1242280A
(en )
1917-10-09
Keyboard mechanism for cash-registers.
GB348630A
(https= )
US1311884A
(en )
1919-08-05
Registering and recording mechanish
GB408795A
(en )
1934-04-19
Improvements in or relating to calculating and/or check writing machines
GB648389A
(https= )
US1440145A
(en )
1922-12-26
Calculating machine
US1958464A
(en )
1934-05-15
Check writing machine
GB191116724A
(en )
1912-07-18
Improvements in or relating to Cash Register Machines.