US Patent 7070691 Protector for sewer system inlet
Patent 7070691 was granted and assigned to BMP Supplies on July, 2006 by the United States Patent and Trademark Office.
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Patent abstract
A protector for the inlet into a sewer system includes a straight or annular, porous tubular casing for placing on or around the periphery of a sewer grate; a skirt extending inwardly or outwardly from the bottom of the casing for overlapping the side edges of a sewer opening so the grate retains the protector in the use position; and a filler in the casing for maintaining the casing in an expanded condition, at least one of the casing, the skirt and the filler being permeable to water and impermeable to contaminants, whereby water can flow into the system while contaminants are blocked.
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Patent Inventor Names
Jim Lindemulder0
Date of Patent
July 4, 2006
0Patent Application Number
107240690
Date Filed
December 1, 2003
0Patent Primary Examiner
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US Patent 7070691 Protector for sewer system inlet
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