CA306577A - Drill-steel - Google Patents

Drill-steel

Info

Publication number
CA306577A
CA306577A CA306577A CA306577DA CA306577A CA 306577 A CA306577 A CA 306577A CA 306577 A CA306577 A CA 306577A CA 306577D A CA306577D A CA 306577DA CA 306577 A CA306577 A CA 306577A
Authority
CA
Canada
Prior art keywords
drill
steel
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
CA306577A
Other languages
French (fr)
Inventor
Mitchell Hugh
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.)
Holman Brothers Ltd
Original Assignee
Holman Brothers Ltd
Publication date
Application granted granted Critical
Publication of CA306577A publication Critical patent/CA306577A/en
Expired legal-status Critical Current

Links

CA306577A Drill-steel Expired CA306577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA306577T

Publications (1)

Publication Number Publication Date
CA306577A true CA306577A (en) 1930-12-09

Family

ID=35259728

Family Applications (1)

Application Number Title Priority Date Filing Date
CA306577A Expired CA306577A (en) Drill-steel

Country Status (1)

Country Link
CA (1) CA306577A (en)

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