B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 21/76 (2006.01)
Patent
CA 2593928
A concrete form having a tubular body formed from a flexile strip wound helically in successive passes to define a wall of the form. The adjacent edges of the strip being releasably engaged with one another to inhibit axial separation of the strip.
Blake Cassels & Graydon Llp
Smoljo Doug
LandOfFree
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