CA276275A - Foreuse a roc - Google Patents

Foreuse a roc

Info

Publication number
CA276275A
CA276275A CA276275A CA276275DA CA276275A CA 276275 A CA276275 A CA 276275A CA 276275 A CA276275 A CA 276275A CA 276275D A CA276275D A CA 276275DA CA 276275 A CA276275 A CA 276275A
Authority
CA
Canada
Prior art keywords
rock drill
drill
rock
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
CA276275A
Other languages
English (en)
Inventor
Mynors Holman Percy
Leonard Duncan John
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 CA276275A publication Critical patent/CA276275A/fr
Expired legal-status Critical Current

Links

CA276275A Foreuse a roc Expired CA276275A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA276275T

Publications (1)

Publication Number Publication Date
CA276275A true CA276275A (fr) 1927-12-13

Family

ID=35206307

Family Applications (1)

Application Number Title Priority Date Filing Date
CA276275A Expired CA276275A (fr) Foreuse a roc

Country Status (1)

Country Link
CA (1) CA276275A (fr)

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