CA550544A - Tete de sondage - Google Patents

Tete de sondage

Info

Publication number
CA550544A
CA550544A CA550544A CA550544DA CA550544A CA 550544 A CA550544 A CA 550544A CA 550544 A CA550544 A CA 550544A CA 550544D A CA550544D A CA 550544DA CA 550544 A CA550544 A CA 550544A
Authority
CA
Canada
Prior art keywords
drilling head
drilling
head
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
CA550544A
Other languages
English (en)
Inventor
W. Houston 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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA550544A publication Critical patent/CA550544A/fr
Expired legal-status Critical Current

Links

CA550544A Tete de sondage Expired CA550544A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA550544T

Publications (1)

Publication Number Publication Date
CA550544A true CA550544A (fr) 1957-12-24

Family

ID=35711934

Family Applications (1)

Application Number Title Priority Date Filing Date
CA550544A Expired CA550544A (fr) Tete de sondage

Country Status (1)

Country Link
CA (1) CA550544A (fr)

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