US2652196A
(en )
1953-09-15
Wire recording storage mechanism for bookkeeping machines
GB709189A
(enrdf_load_stackoverflow )
US2931564A
(en )
1960-04-05
Digital switch mechanism for combined accounting machine and tape recorder
US1930252A
(en )
1933-10-10
Typewriter accumulator
US2939758A
(en )
1960-06-07
Magnetic data recording apparatus
US2106273A
(en )
1938-01-25
Register
US1302250A
(en )
1919-04-29
Calculating-machine.
US2353938A
(en )
1944-07-18
Accounting machine
US2288846A
(en )
1942-07-07
Combined typewriter and computing machine
US3161354A
(en )
1964-12-15
Tabulation control mechanism for accounting machines
US2041752A
(en )
1936-05-26
Cash register
US2636435A
(en )
1953-04-28
Mechanism to control the printing
US2337091A
(en )
1943-12-21
Calculating machine
US3718911A
(en )
1973-02-27
Carriage-position modification of external program
US3253125A
(en )
1966-05-24
Accounting machine recording control means
US3060846A
(en )
1962-10-30
Printing control means for accounting machines
GB1415410A
(en )
1975-11-26
Apparatus for printing a text
US3707619A
(en )
1972-12-26
Actuating apparatus for a business machine
US3164836A
(en )
1965-01-05
Magnetic data recording apparatus
US1370427A
(en )
1921-03-01
Machine compahty
Todd
1974
John von Neumann and the national accounting machine
US2931572A
(en )
1960-04-05
Decimal adder-subtractor device utilizing magnetic recordings
NO117559B
(enrdf_load_stackoverflow )
1969-08-25
US3450042A
(en )
1969-06-17
Zero printing control for adding and printing machines
US2313418A
(en )
1943-03-09
Special character and amount printing mechanism