Patent
   D318287
Priority
Apr 14 1989
Filed
Oct 16 1989
Issued
Jul 16 1991
Expiry
Jul 16 2005
Assg.orig
Entity
unknown
9
2
n/a
The ornamental design for a portable electronic calculator, as shown.

FIG. 1 is a top plan view of a portable electronic calculator showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a rear elevational view;

FIG. 4 is a front elevational view;

FIG. 5 is a left side elevational view;

FIG. 6 is a right side elevational view.

Tsukamoto, Shiro

Patent Priority Assignee Title
5339097, Oct 21 1986 Microsoft Corporation Computer keyboard
5416498, Oct 21 1986 Microsoft Corporation Prehensile positioning computer keyboard
5500643, Aug 26 1993 One-hand prehensile keyboard
D332620, Jul 15 1991 LIMAX ELECTRONICS CO , LTD A CORP OF TAIWAN Calculator
D332961, Dec 11 1989 Pollyflame International B.V. Calculator
D364868, Nov 22 1994 Amy, Yeh Telephone
D435030, Dec 30 1998 K-TECH INTERNATIONAL LTD Telephone
D715248, Jan 25 2014 Curved split-screen cellphone
D750119, Jan 25 2014 Split display screen with graphical user interface
Patent Priority Assignee Title
D306311, Nov 20 1986 Matsushita Electric Industrial Co., Ltd. Electronic calculator
D308692, May 11 1987 Sharp Corporation Electronic calculator
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 16 1989Sekisui Kagaku Kogyo K.K.(assignment on the face of the patent)
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