E - Fixed Constructions – 04 – C
Patent
E - Fixed Constructions
04
C
20/47, 72/91
E04C 3/293 (2006.01) E04B 5/29 (2006.01) E04C 3/07 (2006.01) E04C 3/09 (2006.01) E04C 3/16 (2006.01) E04C 3/04 (2006.01)
Patent
CA 1008691
Butts Ernest O.
Laurus Felix F.
LandOfFree
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