Drainage mat

E - Fixed Constructions – 02 – B

Patent

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91/11, 61/32

E02B 11/00 (2006.01) E01C 11/22 (2006.01) E01C 13/08 (2006.01) E01C 13/10 (2006.01) E01F 5/00 (2006.01)

Patent

CA 1237904

APPLICATION FOR LETTERS PATENT FOR DRAINAGE MAT ABSTRACT OF THE INVENTION Drainage mat comprising three-dimensional openwork covered on at least a major surface with a water permeable fabric having a permittivity from 0.2 seconds-1 to 2.0 seconds-1 and exhibiting a dynamic permeability after 106 loadings of at least 10-4 centimeters per second.

451021

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