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The ornamental design for a printer ribbon cassette, as shown and described. |
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FIG. 1 is a right side front perspective view of a printer ribbon cassette, showing our new design.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a right side elevational view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a left side elevational view thereof.
FIG. 6 is a rear elevational view thereof.
FIG. 7 is a bottom plan view thereof.
Hashimoto, Masanori, Soda, Koichi
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| 3918569, | |||
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 02 1980 | Ricoh Company Ltd. | (assignment on the face of the patent) | / |
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