14 Oct 1952
CHINESE TYPEWRITER
www.google.com/patents/US2613795
8 Aug 1978
Typewriter-calculator combination for the physically disabled
www.google.com/patents/US4106101
11 Sep 1979
Tabulation mechanism for typewriter
www.google.com/patents/EP0010103A1?cl=en
21 Oct 1981
Actuation device for two typewriter functions
www.google.com/patents/EP0038215A2?cl=en
13 June 1984
Auxiliary memory module for an electronic typewriter
www.google.com/patents/EP0110632A1?cl=en
6 Nov 1984
Electronic typewriter
www.google.com/patents/US4480931
28 Jan 1987
Paper feed roll assembly for a typewriter or printer
www.google.com/patents/EP0082296B1?cl=en
17 Nov 1987
Electronic typewriter
www.google.com/patents/USD292806
25 Dec 1990
Electronic typewriter
www.google.com/patents/USD313241
Use search engine https://www.google.com/?tbm=pts for more patents on type writer
No comments:
Post a Comment