E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/08 (2006.01)
Patent
CA 2505441
La présente invention se rapporte à un tambour délayeur comportant des grilles de support garnies de pièces d'usure modulaires emboîtées sur les lumières de ladite grille de support de manière à reconstituer une grille d'usure au-dessus de ladite grille de support.
Mean Jean-Luc
Gowling Lafleur Henderson Llp
Magotteaux International Sa
LandOfFree
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