Patent
   D450762
Priority
May 04 2000
Filed
May 04 2000
Issued
Nov 20 2001
Expiry
Nov 20 2015
Assg.orig
Entity
unknown
2
15
n/a
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.

Shakhbandaryan, Henrik

Patent Priority Assignee Title
D604299, Oct 06 2008 Spell checker
D626553, Oct 13 2009 Electronic book reader
Patent Priority Assignee Title
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4793634, Dec 22 1986 Original perpetual diary calendar
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5560127, Feb 03 1995 Perpetual calendar
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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
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