CA874846A - Rock drilling apparatus - Google Patents

Rock drilling apparatus

Info

Publication number
CA874846A
CA874846A CA874846A CA874846DA CA874846A CA 874846 A CA874846 A CA 874846A CA 874846 A CA874846 A CA 874846A CA 874846D A CA874846D A CA 874846DA CA 874846 A CA874846 A CA 874846A
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
CA874846A
Inventor
L. Sandvig Robert
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.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
Publication date
Application granted granted Critical
Publication of CA874846A publication Critical patent/CA874846A/en
Expired legal-status Critical Current

Links

CA874846A Rock drilling apparatus Expired CA874846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA874846T

Publications (1)

Publication Number Publication Date
CA874846A true CA874846A (en) 1971-07-06

Family

ID=36360772

Family Applications (1)

Application Number Title Priority Date Filing Date
CA874846A Expired CA874846A (en) Rock drilling apparatus

Country Status (1)

Country Link
CA (1) CA874846A (en)

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