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Publication numberUSD291071 S
Publication typeGrant
Application numberUS 06/717,434
Publication dateJul 28, 1987
Filing dateMar 28, 1985
Publication number06717434, 717434, US D291071 S, US D291071S, US-S-D291071, USD291071 S, USD291071S
InventorsRandy J. Breil
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Telephone line polarity tester
US D291071 S
Abstract  available in
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  1. The ornamental design for a telephone line polarity tester, as shown and described.

FIG. 1 is a left and top-front perspective view of a telephone line polarity tester showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof.

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US6361357Apr 13, 2000Mar 26, 20023Com CorporationRemotely illuminated electronic connector for improving viewing of status indicators
US6457992Apr 27, 2001Oct 1, 20023Com CorporationVisual feedback system for electronic device
US6483712Mar 20, 2000Nov 19, 20023Com CorporationIlluminating electrical jack system
US6724889Nov 1, 1999Apr 20, 20043Com CorporationMethod and system for line status indicators using line side power
US7713082 *Jan 19, 2007May 11, 2010Hsiao-Chi LinMulti-functional shackle structure
US20080120817 *Jan 19, 2007May 29, 2008Hsiao-Chi LinMulti-functional shackle structure
U.S. ClassificationD10/78, D10/103