CA546964A - Structure de foret helicoidal a grand rendement aminci automatiquement - Google Patents

Structure de foret helicoidal a grand rendement aminci automatiquement

Info

Publication number
CA546964A
CA546964A CA546964A CA546964DA CA546964A CA 546964 A CA546964 A CA 546964A CA 546964 A CA546964 A CA 546964A CA 546964D A CA546964D A CA 546964DA CA 546964 A CA546964 A CA 546964A
Authority
CA
Canada
Prior art keywords
thinned
duty
heavy
self
twist 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
CA546964A
Other languages
English (en)
Inventor
Carl J. Oxford, 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.)
National Twist Drill and Tool Co
Original Assignee
National Twist Drill and Tool Co
Publication date
Application granted granted Critical
Publication of CA546964A publication Critical patent/CA546964A/fr
Expired legal-status Critical Current

Links

CA546964A Structure de foret helicoidal a grand rendement aminci automatiquement Expired CA546964A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA546964T

Publications (1)

Publication Number Publication Date
CA546964A true CA546964A (fr) 1957-10-01

Family

ID=35704166

Family Applications (1)

Application Number Title Priority Date Filing Date
CA546964A Expired CA546964A (fr) Structure de foret helicoidal a grand rendement aminci automatiquement

Country Status (1)

Country Link
CA (1) CA546964A (fr)

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