CA219125A - Formation of drills - Google Patents

Formation of drills

Info

Publication number
CA219125A
CA219125A CA219125A CA219125DA CA219125A CA 219125 A CA219125 A CA 219125A CA 219125 A CA219125 A CA 219125A CA 219125D A CA219125D A CA 219125DA CA 219125 A CA219125 A CA 219125A
Authority
CA
Canada
Prior art keywords
drills
formation
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
CA219125A
Other languages
French (fr)
Inventor
P. Wineman Charles
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.)
DETROIT TWIST DRILL Co
Original Assignee
DETROIT TWIST DRILL Co
Publication date
Application granted granted Critical
Publication of CA219125A publication Critical patent/CA219125A/en
Expired legal-status Critical Current

Links

CA219125A Formation of drills Expired CA219125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA219125T

Publications (1)

Publication Number Publication Date
CA219125A true CA219125A (en) 1922-05-30

Family

ID=35113569

Family Applications (1)

Application Number Title Priority Date Filing Date
CA219125A Expired CA219125A (en) Formation of drills

Country Status (1)

Country Link
CA (1) CA219125A (en)

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