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Publication numberUSD307961 S
Publication typeGrant
Application numberUS 07/018,978
Publication dateMay 15, 1990
Filing dateFeb 25, 1987
Publication number018978, 07018978, US D307961 S, US D307961S, US-S-D307961, USD307961 S, USD307961S
InventorsEdward B. Howell
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hot water tank helical coil cleaner
US D307961 S
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  1. The ornamental design for a hot water tank helical coil cleaner, as shown and described.

FIG. 1 is a perspective view of a hot water tank helical coil cleaner showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8276238 *Jan 6, 2012Oct 2, 2012Norman Donald YoungRoller cover cleaner
U.S. ClassificationD32/35