E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
E02D 31/14 (2006.01) E02D 27/01 (2006.01) E02D 31/10 (2006.01)
Patent
CA 2282109
An apparatus for creating a void under a structural concrete slab which includes a body having a bottom surface with projections which deform and then collapse after a preset displacement in response to subgrade compressive stress.
Beaver Plastics Ltd.
Vasseur Robert Eugene
Woodruff Nathan V.
LandOfFree
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