Patent
   D261773
Priority
Mar 15 1979
Filed
Mar 15 1979
Issued
Nov 10 1981
Expiry
Nov 10 1995
Assg.orig
Entity
unknown
8
3
n/a
The ornamental design for a handheld calculator, substantially as shown and described.

FIG. 1 is a top right perspective view of _a handheld calculator showing our new design;

FIG. 2 is a top plan view of the handheld calculator shown _in FIG. 1;

FIG. 3 is a right side elevational view of the _handheld calculator; and

FIG. 4 is a front end view of the handheld calculator.

The bottom of the handheld calculator is plain and unornamented.

Ichikawa, Shinpei, Lawrence, William J.

Patent Priority Assignee Title
D269356, Mar 20 1981 Canon Kabushiki Kaisha Desk top electronic calculator
D307032, Jan 07 1987 Sharp Corporation Electronic calculator with solar cell
D323488, Dec 18 1989 ABL IP Holding, LLC Control panel
D357496, Mar 09 1993 Checkbook calculator
D546871, Dec 22 2005 Casio Keisanki Kabushiki Kaisha Electronic calculator
D604282, Mar 31 2008 Vertu Corporation Limited Set of keys for a handset
D605186, Mar 31 2008 Vertu Corporation Limited Set of keys for a handset
D766910, Nov 11 2014 Set of trigonometry calculator keys
Patent Priority Assignee Title
4092527, Jan 31 1977 Texas Instruments Incorporated Calculator with interchangeable keyset
4104728, Jun 06 1973 Sharp Kabushiki Kaisha Electronic apparatus equipped on a flexible substratum
D251330, Feb 17 1977 Matsushita Electric Industrial Co., Ltd. Combined calculator, clock and alarm
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 15 1979Texas Instruments Incorporated(assignment on the face of the patent)
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