E - Fixed Constructions – 06 – B
Patent
E - Fixed Constructions
06
B
E06B 5/10 (2006.01) E06B 3/70 (2006.01) E21F 17/00 (2006.01) E21F 17/12 (2006.01)
Patent
CA 2410720
A mine door leaf of hollow construction with the hollow infilled with a fluent filling material which, when solidified, attaches to the enclosing components of the door leaf.
Kennedy John M.
Kennedy William R.
Jack Kennedy Metal Products And Buildings Inc.
Smart & Biggar
LandOfFree
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