CA548392A - Appareil a percer le roc - Google Patents

Appareil a percer le roc

Info

Publication number
CA548392A
CA548392A CA548392A CA548392DA CA548392A CA 548392 A CA548392 A CA 548392A CA 548392 A CA548392 A CA 548392A CA 548392D A CA548392D A CA 548392DA CA 548392 A CA548392 A CA 548392A
Authority
CA
Canada
Prior art keywords
drilling apparatus
rock drilling
rock
drilling
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
CA548392A
Other languages
English (en)
Inventor
C. Holman Richard
Oram Morris
B. James Eric
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 CA548392A publication Critical patent/CA548392A/fr
Expired legal-status Critical Current

Links

CA548392A Appareil a percer le roc Expired CA548392A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA548392T

Publications (1)

Publication Number Publication Date
CA548392A true CA548392A (fr) 1957-11-05

Family

ID=35709764

Family Applications (1)

Application Number Title Priority Date Filing Date
CA548392A Expired CA548392A (fr) Appareil a percer le roc

Country Status (1)

Country Link
CA (1) CA548392A (fr)

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