US2734614A
(en )
1956-02-14
Proportional ribbon feed mechanism
GB508954A
(en )
1939-07-05
Improvements in machines for operating upon statistical cards
GB567374A
(https= )
GB943821A
(en )
1963-12-04
A cash register or similar accounting machine
GB737751A
(en )
1955-09-28
Improvements in or relating to a typewriter controlled punching apparatus
US2059251A
(en )
1936-11-03
Printing and paper feeding mechanism for adding machines or the like
GB490671A
(https= )
GB549530A
(https= )
US1873511A
(en )
1932-08-23
Perforating machine
GB251842A
(https= )
US2702622A
(en )
1955-02-22
Paper feeding means in accounting machines
US3338367A
(en )
1967-08-29
Coin controlled machine for operating on tape
GB361116A
(en )
1931-11-19
Improvements relating to telegraph perforators
GB547565A
(https= )
US2784666A
(en )
1957-03-12
Voucher-issuing business machine
GB791245A
(en )
1958-02-26
Improvements in or relating to keyboard perforators for perforating teleprinter tapes
GB783869A
(https= )
GB719372A
(en )
1954-12-01
Improvements in or relating to keyboard controlled mechanisms for use in the production of lines or patterns of typographical and like matter
GB334727A
(https= )
GB447485A
(https= )
GB238553A
(en )
1926-11-15
Improvements in or relating to apparatus for perforating sheet material
GB1050647A
(https= )
GB191104050A
(en )
1912-02-19
Improvements in and relating to Apparatus for Perforating the Signal Controlling Tape to be used with Automatic Telegraph Transmitters.
GB388760A
(en )
1933-02-28
Improvements in or relating to apparatus for reproducing the records on statistical cards
GB167833A
(https= )