US4211498A
(en )
1980-07-08
Paper cutting and perforated line forming device of printer
US4280693A
(en )
1981-07-28
Sheet feeding device for printing apparatus
GB434436A
(en )
1935-09-02
Improvements in or relating to sheet feeding mechanism for printing mechanism applicable to statistical, calculating and like machines
US3902418A
(en )
1975-09-02
Printing apparatus
GB190433A
(enrdf_load_stackoverflow )
US3268049A
(en )
1966-08-23
Function control arrangements having common drive means
US2121683A
(en )
1938-06-21
Calculating machine
US3742244A
(en )
1973-06-26
Control means for printing apparatus, in particular for offset printing machines
US2318000A
(en )
1943-05-04
Platen mechanism
US2971625A
(en )
1961-02-14
Repeat actuation arrangement for typewriters
US2919781A
(en )
1960-01-05
Control mechanism for the motor of an electric typewriter
US2284803A
(en )
1942-06-02
Listing adding machine
US2938615A
(en )
1960-05-31
Type bar drive
GB204676A
(en )
1924-08-18
Improvements in or relating to printing mechanism, particularly applicable to tabulating machines or like record-cardcontrolled machines
GB216142A
(en )
1925-08-14
Improvements in or relating to statistical machines
US1642009A
(en )
1927-09-13
Sellschaft
US2080519A
(en )
1937-05-18
Cash register
US2600990A
(en )
1952-06-17
Letter actuated tripping device in
US1960918A
(en )
1934-05-29
Duplicate ticket receipt register
US2763357A
(en )
1956-09-18
Reversible page feed mechanism
US1791899A
(en )
1931-02-10
Xwtlhelm k khopff
US3379297A
(en )
1968-04-23
Electric typewriter keyboard operated mechanism
US1309655A
(en )
1919-07-15
Tripping mechanism for machines for marking mail
US3586150A
(en )
1971-06-22
Tabulator safety apparatus
GB317490A
(en )
1930-11-17
Improvements in or relating to record-controlled statistical machines