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The ornamental design for a perpetual calendar, as shown and described. |
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, |
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