E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/00 (2006.01) E21B 17/10 (2006.01)
Patent
CA 2152964
A rod guide assembly having a mount molded on rod shank, a centralizer mounted on the mount which is rotatable within the centralizer, closure means between the mount and the centralizer for preventing flow of particles into the centralizer.
Blake Cassels & Graydon Llp
Sable Donald E.
LandOfFree
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