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| US4492158 | 9 Mar 1983 | 8 Jan 1985 | Pitney Bowes Inc. | Postage printing apparatus having a movable print head and a hollow non-rotating support shaft |
| US4492159 | 8 Mar 1983 | 8 Jan 1985 | Pitney Bowes Inc. | Postage printing apparatus having a print head with a replaceable ribbon cartridge |
| US4492160 | 9 Mar 1983 | 8 Jan 1985 | Pitney Bowes Inc. | Postage printing apparatus having a movable print head and a variable speed drum rotation |
| US4702631 | 7 Nov 1985 | 27 Oct 1987 | Kabushiki Kaisha Toshiba | Thermal ribbon cassette and housing therefore |
