CA280512A - Drill-bit - Google Patents

Drill-bit

Info

Publication number
CA280512A
CA280512A CA280512A CA280512DA CA280512A CA 280512 A CA280512 A CA 280512A CA 280512 A CA280512 A CA 280512A CA 280512D A CA280512D A CA 280512DA CA 280512 A CA280512 A CA 280512A
Authority
CA
Canada
Prior art keywords
drill
bit
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
CA280512A
Other languages
French (fr)
Inventor
R. Watson George
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.)
Armstrong Manufacturing Co
Original Assignee
Armstrong Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA280512A publication Critical patent/CA280512A/en
Expired legal-status Critical Current

Links

CA280512A Drill-bit Expired CA280512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA280512T

Publications (1)

Publication Number Publication Date
CA280512A true CA280512A (en) 1928-05-29

Family

ID=35213604

Family Applications (1)

Application Number Title Priority Date Filing Date
CA280512A Expired CA280512A (en) Drill-bit

Country Status (1)

Country Link
CA (1) CA280512A (en)

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