CA551431A - Rotary expansible drill bits - Google Patents

Rotary expansible drill bits

Info

Publication number
CA551431A
CA551431A CA551431A CA551431DA CA551431A CA 551431 A CA551431 A CA 551431A CA 551431 A CA551431 A CA 551431A CA 551431D A CA551431D A CA 551431DA CA 551431 A CA551431 A CA 551431A
Authority
CA
Canada
Prior art keywords
drill bits
rotary expansible
expansible drill
rotary
bits
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
CA551431A
Other languages
French (fr)
Inventor
Archer W. Kammerer, Jr.
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 CA551431A publication Critical patent/CA551431A/en
Expired legal-status Critical Current

Links

CA551431A Rotary expansible drill bits Expired CA551431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA551431T

Publications (1)

Publication Number Publication Date
CA551431A true CA551431A (en) 1958-01-07

Family

ID=35712833

Family Applications (1)

Application Number Title Priority Date Filing Date
CA551431A Expired CA551431A (en) Rotary expansible drill bits

Country Status (1)

Country Link
CA (1) CA551431A (en)

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