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CA923887A - Non rifling drill bit - Google Patents

Non rifling drill bit

Info

Publication number
CA923887A
CA923887A CA039896A CA39896A CA923887A CA 923887 A CA923887 A CA 923887A CA 039896 A CA039896 A CA 039896A CA 39896 A CA39896 A CA 39896A CA 923887 A CA923887 A CA 923887A
Authority
CA
Canada
Prior art keywords
rifling
drill bit
drill
bit
rifling 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
CA039896A
Other versions
CA39896S (en
Inventor
Berscheid Irvine
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.)
I J BERSCHEID AND ASSOCIATES Ltd
Original Assignee
I J BERSCHEID AND ASSOCIATES Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by I J BERSCHEID AND ASSOCIATES Ltd filed Critical I J BERSCHEID AND ASSOCIATES Ltd
Application granted granted Critical
Publication of CA923887A publication Critical patent/CA923887A/en
Expired legal-status Critical Current

Links

CA039896A 1968-02-20 1969-01-13 Non rifling drill bit Expired CA923887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70692168A 1968-02-20 1968-02-20

Publications (1)

Publication Number Publication Date
CA923887A true CA923887A (en) 1973-04-03

Family

ID=24839634

Family Applications (1)

Application Number Title Priority Date Filing Date
CA039896A Expired CA923887A (en) 1968-02-20 1969-01-13 Non rifling drill bit

Country Status (1)

Country Link
CA (1) CA923887A (en)

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