CA632268A - Drill pipe valve - Google Patents

Drill pipe valve

Info

Publication number
CA632268A
CA632268A CA632268A CA632268DA CA632268A CA 632268 A CA632268 A CA 632268A CA 632268 A CA632268 A CA 632268A CA 632268D A CA632268D A CA 632268DA CA 632268 A CA632268 A CA 632268A
Authority
CA
Canada
Prior art keywords
drill pipe
pipe valve
valve
drill
pipe
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
CA632268A
Inventor
M. Carpenter Irvin
O. Melton James
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.)
GEOLOGRAPH Co
Original Assignee
GEOLOGRAPH Co
Publication date
Application granted granted Critical
Publication of CA632268A publication Critical patent/CA632268A/en
Expired legal-status Critical Current

Links

CA632268A Drill pipe valve Expired CA632268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA632268T

Publications (1)

Publication Number Publication Date
CA632268A true CA632268A (en) 1961-12-05

Family

ID=35888417

Family Applications (1)

Application Number Title Priority Date Filing Date
CA632268A Expired CA632268A (en) Drill pipe valve

Country Status (1)

Country Link
CA (1) CA632268A (en)

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