|
The ornamental design for a perpetual calendar, as shown and described. |
|||||||||||||||||
FIG. 1 is a perspective view of the perpetual calendar, according to my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view;
FIG. 4 is a top plan view;
FIG. 5 is a bottom plan view of the perpetual calendar;
FIG. 6 is a side elevation looking in from the left of FIG. 1; and,
FIG. 7 is a side elevation looking in from the right of FIG. 1.
| Patent | Priority | Assignee | Title |
| D872641, | Dec 29 2016 | Samsung Electronics Co., Ltd. | Sculpture |
| Patent | Priority | Assignee | Title |
| 1069533, | |||
| 1803658, | |||
| 141924, | |||
| 193745, | |||
| D275840, | Aug 30 1982 | Wall clock | |
| D301557, | Nov 26 1984 | Trast Enterprise S.r.l. | Electro-optical watch dial or the like |
| D324698, | Mar 01 1990 | Perpetual calendar | |
| D347600, | Nov 16 1992 | TROPAR MANUFACTURING CO , INC | Award plaque |
| D377762, | Nov 27 1995 | Industrial Technology Research Institute | Desk clock |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |