CA517320A - Appareils a aleser par en-dessous - Google Patents

Appareils a aleser par en-dessous

Info

Publication number
CA517320A
CA517320A CA517320A CA517320DA CA517320A CA 517320 A CA517320 A CA 517320A CA 517320 A CA517320 A CA 517320A CA 517320D A CA517320D A CA 517320DA CA 517320 A CA517320 A CA 517320A
Authority
CA
Canada
Prior art keywords
under reamers
reamers
under
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA517320A
Other languages
English (en)
Inventor
Waddington Richard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOYLES BROS DRILLING (EASTERN) Ltd
Original Assignee
BOYLES BROS DRILLING (EASTERN) Ltd
Publication date
Application granted granted Critical
Publication of CA517320A publication Critical patent/CA517320A/fr
Expired legal-status Critical Current

Links

CA517320A Appareils a aleser par en-dessous Expired CA517320A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA517320T

Publications (1)

Publication Number Publication Date
CA517320A true CA517320A (fr) 1955-10-11

Family

ID=35670515

Family Applications (1)

Application Number Title Priority Date Filing Date
CA517320A Expired CA517320A (fr) Appareils a aleser par en-dessous

Country Status (1)

Country Link
CA (1) CA517320A (fr)

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