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The ornamental design for a perpetual calendar, as shown and described. |
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FIG. 1 is a perspective view of a perpetual calendar showing my new design with one of the removable pegs extracted to show the configuration of the stem of the peg and the hole;
FIG. 2 is a top plan view thereof;
FIG. 3 is a left side elevational view;
FIG. 4 is a right side elevational view;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is an enlarged scale fragmentary cross-sectional view taken substantially on line 6--6 of FIG. 1; and
FIG. 7 is a rear perspective view of FIG. 1.
| Patent | Priority | Assignee | Title |
| D284480, | Mar 29 1984 | Wall calendar | |
| D476361, | Jun 05 2002 | Millennium calendar |
| Patent | Priority | Assignee | Title |
| 1470065, | |||
| 226322, | |||
| 229356, | |||
| FR1216665, | |||
| GB17652, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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