US2532228A
(en )
1950-11-28
Electrically operated typewriter
GB1020013A
(en )
1966-02-16
Improvements in or relating to electric encoding keyboards
GB550978A
(en )
1943-02-03
Improvements in or relating to calculating or similar accounting machines
US2148861A
(en )
1939-02-28
Impression mechanism
US2684745A
(en )
1954-07-27
Teletypewriter
GB330264A
(enrdf_load_stackoverflow )
US2689281A
(en )
1954-09-14
Self-cycling ratchet-stepping switch
US1886769A
(en )
1932-11-08
Ticket issuing machine
US2833209A
(en )
1958-05-06
Consecutive number printer
US2692966A
(en )
1954-10-26
Machine control jog switch
US2392275A
(en )
1946-01-01
Recording apparatus
US2388351A
(en )
1945-11-06
Signal controlled printing apparatus
US2728905A
(en )
1955-12-27
Line feed failure indicator
US3604548A
(en )
1971-09-14
Recording arrangement for typing and punching the same information
US2490476A
(en )
1949-12-06
Printing telegraph system
US1508870A
(en )
1924-09-16
Electrically-operated telegraphic typewriting system
US3323449A
(en )
1967-06-06
Card controlled selective rotary printing machine
US2919006A
(en )
1959-12-29
Control for power-operated office machines
US2859277A
(en )
1958-11-04
Teletypewriter
US2463688A
(en )
1949-03-08
Code call mechanism
GB909935A
(en )
1962-11-07
Calculating or similar accounting machine
GB410663A
(en )
1934-05-24
Improvements in and relating to printing telegraphs applicable in particular to ultra-rapid telegraphy
US3003693A
(en )
1961-10-10
Selection mechanism
US1923273A
(en )
1933-08-22
Printing telegraph
US1917511A
(en )
1933-07-11
Keyboard lock