B - Operations – Transporting – 28 – D
Patent
B - Operations, Transporting
28
D
255/70
B28D 1/04 (2006.01) E21B 10/00 (2006.01) E21B 10/48 (2006.01)
Patent
CA 896399
Phaal Cornelius
Smith Leonard I.
LandOfFree
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