US2204971A
(en )
1940-06-18
Disappearing printing die control
US4310256A
(en )
1982-01-12
Printers
GB466314A
(https= )
US2168511A
(en )
1939-08-08
Cash register
US1917511A
(en )
1933-07-11
Keyboard lock
GB1151808A
(en )
1969-05-14
Pulse-Operated Line Printer for Electronic Data-Processing Installations.
US2203115A
(en )
1940-06-04
Cash register
US1994030A
(en )
1935-03-12
Ticket issuing machine
GB297048A
(https= )
US2346323A
(en )
1944-04-11
Typewriting machine
US4412755A
(en )
1983-11-01
Typewriter with an erasing apparatus
GB465798A
(https= )
GB591223A
(https= )
US1761572A
(en )
1930-06-03
Certificate of correction
GB989869A
(en )
1965-04-22
Print impression control mechanism
GB631379A
(https= )
GB765291A
(https= )
GB326446A
(https= )
GB979156A
(https= )
GB868489A
(https= )
GB455006A
(https= )
GB325873A
(https= )
GB1055142A
(en )
1967-01-18
Improvements in or relating to duplicating and like printing machines
GB464133A
(https= )
GB629421A
(https= )