CA280007A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number
CA280007A
CA280007A CA280007A CA280007DA CA280007A CA 280007 A CA280007 A CA 280007A CA 280007 A CA280007 A CA 280007A CA 280007D A CA280007D A CA 280007DA CA 280007 A CA280007 A CA 280007A
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
CA280007A
Other languages
English (en)
Inventor
Treve Holman Arthur
Mynors Holman Percy
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 CA280007A publication Critical patent/CA280007A/fr
Expired legal-status Critical Current

Links

CA280007A Perforatrice a roc Expired CA280007A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA280007T

Publications (1)

Publication Number Publication Date
CA280007A true CA280007A (fr) 1928-05-08

Family

ID=35213099

Family Applications (1)

Application Number Title Priority Date Filing Date
CA280007A Expired CA280007A (fr) Perforatrice a roc

Country Status (1)

Country Link
CA (1) CA280007A (fr)

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