E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/32
E02B 11/00 (2006.01) A01G 25/06 (2006.01)
Patent
CA 1059775
ABSTRACT OF THE DISCLOSURE A drainpipe is disclosed which is preferably formed from a number of juxtaposed sheets made of polymeric material and arranged in a generally tubular formation with adjacent edges unbonded. The sheets are reinforced and held in place by one or more helical structures made of polymeric material and adhesively joined to the sheets.
258603
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