B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
20/20.2
B32B 3/00 (2006.01) B29D 7/00 (2006.01) E04B 1/66 (2006.01)
Patent
CA 1316664
ABSTRACT WATERPROOFING STRUCTURE A structure comprising a membrane of a waterproofing pressure sensitive adhesive material with, contiguous thereto, a layer of relatively rigid covering material comprising two walls held spaced apart by a plurality of transverse ribs defining channels between the walls.
598476
Martin Timothy John
Thompson Peter James
Smart & Biggar
W.r. Grace Limited
LandOfFree
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