US2648385A
(en )
1953-08-11
Floatingly mounted perforating apparatus
GB508954A
(en )
1939-07-05
Improvements in machines for operating upon statistical cards
GB567374A
(enrdf_load_stackoverflow )
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
US2103720A
(en )
1937-12-28
helsel
US2631530A
(en )
1953-03-17
Slip feeler control mechanism
US2059251A
(en )
1936-11-03
Printing and paper feeding mechanism for adding machines or the like
US1968669A
(en )
1934-07-31
H arnold
GB490671A
(enrdf_load_stackoverflow )
GB549530A
(enrdf_load_stackoverflow )
US1873511A
(en )
1932-08-23
Perforating machine
GB375923A
(en )
1932-07-07
Improvements in or relating to key board mechanism for telegraph apparatus
US2702622A
(en )
1955-02-22
Paper feeding means in accounting machines
GB361116A
(en )
1931-11-19
Improvements relating to telegraph perforators
US2784666A
(en )
1957-03-12
Voucher-issuing business machine
GB453645A
(enrdf_load_stackoverflow )
US1731929A
(en )
1929-10-15
Cash register
GB791245A
(en )
1958-02-26
Improvements in or relating to keyboard perforators for perforating teleprinter tapes
GB783869A
(enrdf_load_stackoverflow )
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
GB315043A
(en )
1929-07-11
Improvements in or relating to feed machanism for keyboard-operated embossing or like machines
GB715040A
(enrdf_load_stackoverflow )
GB238553A
(en )
1926-11-15
Improvements in or relating to apparatus for perforating sheet material
GB191104050A
(en )
1912-02-19
Improvements in and relating to Apparatus for Perforating the Signal Controlling Tape to be used with Automatic Telegraph Transmitters.