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Patent
D307961
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Priority
Feb 25 1987
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Filed
Feb 25 1987
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Issued
May 15 1990
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Expiry
May 15 2004
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Assg.orig
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Entity
unknown
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6
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4
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n/a
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The ornamental design for a hot water tank helical coil cleaner, as shown and described.
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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.
Howell, Edward B.
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