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The ornamental design for a perpetual calendar, substantially as shown and described. |
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FIG. 1 is a perspective view, showing my new design.
FIG. 2 is a rear view thereof.
FIG. 3 is a left end view.
FIG. 4 is a bottom plan view.
FIG. 5 is an inside face view in open condition.
The broken lines are shown for illustrative purposes only.
| Patent | Priority | Assignee | Title |
| D311026, | Jun 28 1988 | Combined calendar and message board | |
| D318292, | May 30 1989 | PASSEY, MAXIE F ; LILLY, MARILYN | Calendar holder |
| D369828, | Dec 02 1993 | Quick Point, Inc. | Calendar holder |
| D435590, | Sep 17 1999 | Wall calendar and clock |
| Patent | Priority | Assignee | Title |
| 4176478, | Jul 12 1978 | Calendar | |
| 792641, | |||
| 811846, | |||
| 190707, | |||
| D252212, | Sep 24 1976 | Perpetual calendar | |
| D274241, | Aug 19 1980 | Calender sheet for the visually handicapped or the like | |
| FR991128, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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