Device particularly intended for long-hole drilling at...

Details Device particularly intended for long-hole drilling at... Device particularly intended for long-hole drilling at...

E - Fixed Constructions

21

D

255/14, 255/52

E21D 20/00 (2006.01) B65G 59/06 (2006.01) E21B 19/20 (2006.01) E21B 19/24 (2006.01)

Patent

CA 1001151

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