|
The ornamental design for a perpetual calendar calculator, as shown and described. |
FIG. 1 is a front elevational view of the perpetual calendar calculator of the present invention;
FIG. 2 is a rear elevational view of the perpetual calendar calculator of FIG. 1;
FIG. 3 is a left side elevational view of the perpetual calendar calculator of FIG. 1;
FIG. 4 is a right side elevational view of the perpetual calendar calculator of FIG. 1;
FIG. 5 is a top plan view of the perpetual calendar calculator of FIG. 1; and,
FIG. 6 is a bottom plan view of the perpetual calendar calculator of FIG. 1.
Patent | Priority | Assignee | Title |
D604299, | Oct 06 2008 | Spell checker | |
D626553, | Oct 13 2009 | Electronic book reader |
Patent | Priority | Assignee | Title |
3800454, | |||
4187629, | Sep 15 1977 | Yamada-Graphics Corp. | Perpetual and multi-year calendars |
4611995, | Oct 16 1979 | Canon Kabushiki Kaisha | Electronic language learning machine |
4793634, | Dec 22 1986 | Original perpetual diary calendar | |
4813707, | Mar 11 1988 | Perpetual calendar | |
4828290, | Jan 11 1988 | Perpetual calendar which utilizes seven month tables and methods of constructing and using the same | |
5560127, | Feb 03 1995 | Perpetual calendar | |
D323347, | Aug 08 1989 | Perpetual calendar | |
D365848, | Dec 12 1994 | Electronic calendar | |
D401272, | Nov 28 1997 | Housing for an electronic calender | |
D410440, | May 28 1998 | Vehicle maintenance manager | |
D427629, | Oct 26 1999 | Limax Electronics Co., Ltd. | Calculator with perpetual calendar suitable for traveler |
D434070, | May 19 2000 | Limax Electronics Co., Ltd. | Calculator with perpetual calendar |
D437351, | May 18 2000 | Limax Electronics Co., Ltd. | Calculator with perpetual calendar |
D442210, | Jul 11 2000 | GLAD PRODUCTS COMPANY, THE | Clock with calculator and calendar |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Date | Maintenance Fee Events |
Date | Maintenance Schedule |