E - Fixed Constructions
04
F
20/107
E04F 19/10 (2006.01) E04C 2/42 (2006.01)
Patent
CA 1291625
ABSTRACT A grate for a trench is of generally rectangular form having a pair of parallel longitudinal edges and regularly spaced transverse straps defining slots between them, a strap and one of its adjacent slots forming a pattern repeat wherein one transverse edge of the grate has only a first portion of a pattern repeat and the opposite transverse edge has a portion of a pattern repeat complementary to said first portion of a pattern repeat.
556434
Mccarthy Tetrault Llp
Watts Industries (canada) Incorporated
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