CA452468A - Outil etage a forer - Google Patents

Outil etage a forer

Info

Publication number
CA452468A
CA452468A CA452468A CA452468DA CA452468A CA 452468 A CA452468 A CA 452468A CA 452468 A CA452468 A CA 452468A CA 452468D A CA452468D A CA 452468DA CA 452468 A CA452468 A CA 452468A
Authority
CA
Canada
Prior art keywords
drill bit
step cut
cut drill
bit
drill
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
CA452468A
Other languages
English (en)
Inventor
Edward Bennett Williams, 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 CA452468A publication Critical patent/CA452468A/fr
Expired legal-status Critical Current

Links

CA452468A Outil etage a forer Expired CA452468A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA452468T

Publications (1)

Publication Number Publication Date
CA452468A true CA452468A (fr) 1948-11-09

Family

ID=35570198

Family Applications (1)

Application Number Title Priority Date Filing Date
CA452468A Expired CA452468A (fr) Outil etage a forer

Country Status (1)

Country Link
CA (1) CA452468A (fr)

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