|
| US3960259 | 23 Aug 1974 | 1 Jun 1976 | Ing. C. Olivetti & C., S.p.A. | Ribbon cartridge for typewriter, calculating, accounting or like office machines |
| US4088218 | 12 Oct 1976 | 9 May 1978 | NCR Corporation | Ribbon cassette with bi-color capability |
| US4131373 | 10 Jun 1977 | 26 Dec 1978 | Liquid Paper Corporation | Typewriter ribbon cartridge |
| US4188134 | 3 Nov 1977 | 12 Feb 1980 | Litton Business Systems, Inc. | Ribbon cartridge having cam means for moving ribbon sensing and reversing lever |
| US4212551 | 17 Nov 1977 | 15 Jul 1980 | Litton Business Systems, Inc. | Ribbon cartridge |
| US4239107 | 1 Feb 1979 | 16 Dec 1980 | International Business Machines Corporation | Cartridge assembly apparatus for typewriters |
| US4350452 | 31 Mar 1980 | 21 Sep 1982 | International Business Machines Corporation | Ribbon loading system for a typewriter or the like using a sidemounted ribbon cartridge having a detachable ribbon guide |
| US4413920 | 9 Oct 1981 | 8 Nov 1983 | Exxon Research and Engineering Co. | Printing ribbon cartridge with flexible ribbon guides |
| US4934623 | 26 Jan 1989 | 19 Jun 1990 | Dai Nippon Insatsu Kabushiki Kaisha | Mechanism for preventing unintended rotation of reels of film storage cassette |
| US4990006 | 2 Dec 1988 | 5 Feb 1991 | Ta Triumph Adler Aktiengesells | Holder of a ribbon for typewriters or similar machines |
| US6241774 | 20 May 1999 | 5 Jun 2001 | Yasuhiko Shimizu
Tapic International Co., Ltd. | Artificial esophagus |
| USRE31117 | 23 Jul 1979 | 4 Jan 1983 | NCR Corporation | Ribbon cassette with bi-color capability |
| USRE32053 | 28 Aug 1979 | 24 Dec 1985 | | Articulated ribbon-guiding structure |
