US1928656A
(en )
1933-10-03
Combined typewriting and computing machine
US2745532A
(en )
1956-05-15
Code typing means
GB851050A
(enrdf_load_stackoverflow )
US2947357A
(en )
1960-08-02
Keyboards for automatic composing machines
GB492748A
(en )
1938-09-22
Improvements in calculating machines
US2020594A
(en )
1935-11-12
Ticket printing and issuing
US3167003A
(en )
1965-01-26
Multiple field printing mechanism
US2288846A
(en )
1942-07-07
Combined typewriter and computing machine
US2545636A
(en )
1951-03-20
Printing and punching means for accounting machines
US2172749A
(en )
1939-09-12
Computing and like machine
US3016007A
(en )
1962-01-09
Tiotttnr tttf print-
GB703270A
(en )
1954-02-03
Improvements in or relating to printing apparatus for statistical machines
US3059845A
(en )
1962-10-23
Apparatus for transmission and reception of impulses representing numerical values and computing operations
US3232403A
(en )
1966-02-01
Typewriter having two sets of typelevers and continuously moving carriage
US3301371A
(en )
1967-01-31
Automatic zero printing means
US1923596A
(en )
1933-08-22
Imprinting machine
US3707619A
(en )
1972-12-26
Actuating apparatus for a business machine
US3910182A
(en )
1975-10-07
Imprinting means for a computer access terminal
US1098095A
(en )
1914-05-26
Computing-machine.
US3066866A
(en )
1962-12-04
Adding apparatus
US1050347A
(en )
1913-01-14
Adding-attachment for type-writing machines.
US2433679A
(en )
1947-12-30
Indian currency computing and recording calculator
US2071586A
(en )
1937-02-23
Computing machine
GB900541A
(en )
1962-07-04
Document sorting and accounting systems and apparatus
US3190551A
(en )
1965-06-22
Decimal parity digit apparatus