CA459307A - Centralisateur de foret - Google Patents

Centralisateur de foret

Info

Publication number
CA459307A
CA459307A CA459307A CA459307DA CA459307A CA 459307 A CA459307 A CA 459307A CA 459307 A CA459307 A CA 459307A CA 459307D A CA459307D A CA 459307DA CA 459307 A CA459307 A CA 459307A
Authority
CA
Canada
Prior art keywords
drill steel
steel centralizer
centralizer
drill
steel
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
CA459307A
Other languages
English (en)
Inventor
Clark Curtis John
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.)
Joy Manufacturing Co
Original Assignee
Joy Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA459307A publication Critical patent/CA459307A/fr
Expired legal-status Critical Current

Links

CA459307A Centralisateur de foret Expired CA459307A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA459307T

Publications (1)

Publication Number Publication Date
CA459307A true CA459307A (fr) 1949-08-30

Family

ID=35578133

Family Applications (1)

Application Number Title Priority Date Filing Date
CA459307A Expired CA459307A (fr) Centralisateur de foret

Country Status (1)

Country Link
CA (1) CA459307A (fr)

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