US2978086A
(en )
1961-04-04
Key operated machines
US2110854A
(en )
1938-03-15
Department store machine
GB259069A
(enrdf_load_stackoverflow )
US2955755A
(en )
1960-10-11
Electro-mechanical storage, transfer, and read-out device
US2816609A
(en )
1957-12-17
Tape perforating machine
GB445846A
(en )
1936-04-06
Improvements in or relating to code translating apparatus
US2645551A
(en )
1953-07-14
Time recording machine
US3010387A
(en )
1961-11-28
Printing machines
GB352950A
(en )
1931-07-14
Improvements in or relating to machines for punching statistical record cards
GB745482A
(en )
1956-02-29
Key-controlled perforating machines
US2996245A
(en )
1961-08-15
Punching and reading apparatus for calculating machines
US2988269A
(en )
1961-06-13
Reichert
US1506381A
(en )
1924-08-26
Method of and apparatus for perforating record sheets
US3183829A
(en )
1965-05-18
Check writing machine
US2736023A
(en )
1956-02-21
La vergne h
US2994473A
(en )
1961-08-01
Machine for punching tabulating cards in connection with credit sales involving a charge plate
US3084013A
(en )
1963-04-02
brett
US3018039A
(en )
1962-01-23
Code read-in translator for controlling lister-calculating machines
US1989887A
(en )
1935-02-05
Combination hole punch
US2213573A
(en )
1940-09-03
Recording lock
US2160171A
(en )
1939-05-30
Card punch
US3268162A
(en )
1966-08-23
Data source recorder
US1896551A
(en )
1933-02-07
Accounting machine for punching totals
US1834562A
(en )
1931-12-01
Accounting machine with punching attachment
US1228315A
(en )
1917-05-29
Counting and recording mechanism.