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CA495279A - Devices for indicating the wear of drilling bits - Google Patents

Devices for indicating the wear of drilling bits

Info

Publication number
CA495279A
CA495279A CA495279A CA495279DA CA495279A CA 495279 A CA495279 A CA 495279A CA 495279 A CA495279 A CA 495279A CA 495279D A CA495279D A CA 495279DA CA 495279 A CA495279 A CA 495279A
Authority
CA
Canada
Prior art keywords
wear
indicating
devices
drilling bits
drilling
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
CA495279A
Other languages
French (fr)
Inventor
E. True Martin
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.)
Standard Oil Development Co
Original Assignee
Standard Oil Development Co
Publication date
Application granted granted Critical
Publication of CA495279A publication Critical patent/CA495279A/en
Expired legal-status Critical Current

Links

CA495279A Devices for indicating the wear of drilling bits Expired CA495279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA495279T

Publications (1)

Publication Number Publication Date
CA495279A true CA495279A (en) 1953-08-11

Family

ID=35640687

Family Applications (1)

Application Number Title Priority Date Filing Date
CA495279A Expired CA495279A (en) Devices for indicating the wear of drilling bits

Country Status (1)

Country Link
CA (1) CA495279A (en)

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