CA628274A - Expansible rotary drill bit - Google Patents

Expansible rotary drill bit

Info

Publication number
CA628274A
CA628274A CA628274A CA628274DA CA628274A CA 628274 A CA628274 A CA 628274A CA 628274 A CA628274 A CA 628274A CA 628274D A CA628274D A CA 628274DA CA 628274 A CA628274 A CA 628274A
Authority
CA
Canada
Prior art keywords
drill bit
rotary drill
expansible rotary
expansible
bit
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
CA628274A
Inventor
W. Kammerer Archer
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 CA628274A publication Critical patent/CA628274A/en
Expired legal-status Critical Current

Links

CA628274A Expansible rotary drill bit Expired CA628274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA628274T

Publications (1)

Publication Number Publication Date
CA628274A true CA628274A (en) 1961-10-03

Family

ID=35884404

Family Applications (1)

Application Number Title Priority Date Filing Date
CA628274A Expired CA628274A (en) Expansible rotary drill bit

Country Status (1)

Country Link
CA (1) CA628274A (en)

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