Patent
   D312583
Priority
Mar 14 1988
Filed
Mar 14 1988
Issued
Dec 04 1990
Expiry
Dec 04 2004
Assg.orig
Entity
unknown
5
6
n/a
The ornamental design for a circuit tester, as shown.

FIG. 1 is a bottom plan view of a circuit tester showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a right side elevational view; and

FIG. 6 is a left side elevational view thereof.

Kopp, Harold P.

Patent Priority Assignee Title
6731217, Sep 13 2002 Electrical circuit tester
9116178, Oct 11 2012 Reliance Controls Corporation Circuit tester with variable volume audible voltage indication
D336619, Jan 14 1991 DUSHANE, STEVEN D Receiver for checking the energized state of a circuit
D396013, Jan 09 1997 Applied Power Inc. Plug-in electrical instrument
D542680, Jun 09 2005 GREENLEE TOOLS, INC Electrical tester
Patent Priority Assignee Title
3967195, Oct 21 1974 AMP Incorporated Circuit tester for three wire electrical outlets
4034284, Aug 08 1975 IDEAL Industries, Inc. Hand-held wall receptacle wiring tester with oppositely disposed push/pull surfaces for insertion and removal of the tester
4127807, Aug 08 1975 IDEAL Industries, Inc. Hand-held circuit tester with lens arrangement for viewing indicator lamps housed within the tester
4280092, Apr 23 1979 IDEAL Industries, Inc. Ground fault interrupter tester
224596,
D300809, May 27 1986 Cable Electric Products, Inc. Circuit analyzer
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 11 1988KOPP, HAROLD P POLYTRONICS, INC ASSIGNMENT OF ASSIGNORS INTEREST 0048480758 pdf
Mar 14 1988Polytronics, Inc.(assignment on the face of the patent)
Nov 27 1992POLYTRONICS, INC KOPP, HAROLD P ASSIGNMENT OF ASSIGNORS INTEREST 0063350724 pdf
Feb 09 2000KOPP, HAROLD P IDEAL INDUSTRIES, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0106960601 pdf
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