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CA499065A - Dull bit indicator - Google Patents

Dull bit indicator

Info

Publication number
CA499065A
CA499065A CA499065A CA499065DA CA499065A CA 499065 A CA499065 A CA 499065A CA 499065 A CA499065 A CA 499065A CA 499065D A CA499065D A CA 499065DA CA 499065 A CA499065 A CA 499065A
Authority
CA
Canada
Prior art keywords
bit indicator
dull bit
dull
indicator
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
CA499065A
Other languages
French (fr)
Inventor
J. Bielstein Walter
P. Nolley 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.)
Standard Oil Development Co
Original Assignee
Standard Oil Development Co
Publication date
Application granted granted Critical
Publication of CA499065A publication Critical patent/CA499065A/en
Expired legal-status Critical Current

Links

CA499065A Dull bit indicator Expired CA499065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA499065T

Publications (1)

Publication Number Publication Date
CA499065A true CA499065A (en) 1954-01-05

Family

ID=35644508

Family Applications (1)

Application Number Title Priority Date Filing Date
CA499065A Expired CA499065A (en) Dull bit indicator

Country Status (1)

Country Link
CA (1) CA499065A (en)

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