CA220850A - Method of making drills - Google Patents

Method of making drills

Info

Publication number
CA220850A
CA220850A CA220850A CA220850DA CA220850A CA 220850 A CA220850 A CA 220850A CA 220850 A CA220850 A CA 220850A CA 220850D A CA220850D A CA 220850DA CA 220850 A CA220850 A CA 220850A
Authority
CA
Canada
Prior art keywords
making drills
drills
making
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
CA220850A
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 CA220850A publication Critical patent/CA220850A/en
Expired legal-status Critical Current

Links

CA220850A Method of making drills Expired CA220850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA220850T

Publications (1)

Publication Number Publication Date
CA220850A true CA220850A (en) 1922-07-11

Family

ID=35116453

Family Applications (1)

Application Number Title Priority Date Filing Date
CA220850A Expired CA220850A (en) Method of making drills

Country Status (1)

Country Link
CA (1) CA220850A (en)

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