F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 13/04 (2006.01) E21D 21/00 (2006.01)
Patent
CA 2701265
A solid masonry and hollow block fastening device that uses two expansion collars to secure a fastening thereof in varied masonry materials. In greater particularity, the two expansion collars are interconnected by a bridge of a unitary construction therewith in order to enhance the strength and holding power thereof when mounted on masonry material.
Hyman Steven M.
Kaplan Stanley
Hyman Steven M.
Kaplan Stanley
Moffat & Co.
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