Patent
   D501868
Priority
Jun 19 2003
Filed
Oct 30 2003
Issued
Feb 15 2005
Expiry
Feb 15 2019
Assg.orig
Entity
unknown
1
4
n/a
The ornamental design for a calculator, as shown and described.

FIG. 1 is a front perspective view of a calculator showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a front perspective view thereof in an open position.

Chan, Sik-Leung

Patent Priority Assignee Title
D605220, Aug 11 2008 Calculator
Patent Priority Assignee Title
4074088, May 21 1974 Texas Instruments Incorporated Keyboard apparatus and method of making
D312833, Feb 06 1987 Casio Computer Co., Ltd. Electronic calculator
D335654, Mar 27 1991 Electronic note pad for data entry
D340255, Jul 15 1991 Calculator
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Aug 07 2003CHAN, SIK-LEUNGC C & L COMPANY LIMITEDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0146570799 pdf
Oct 30 2003C.C. & L Company Limited(assignment on the face of the patent)
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