CA477879A - Rock drills - Google Patents

Rock drills

Info

Publication number
CA477879A
CA477879A CA477879A CA477879DA CA477879A CA 477879 A CA477879 A CA 477879A CA 477879 A CA477879 A CA 477879A CA 477879D A CA477879D A CA 477879DA CA 477879 A CA477879 A CA 477879A
Authority
CA
Canada
Prior art keywords
rock drills
drills
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
CA477879A
Other languages
French (fr)
Inventor
Clark Curtis 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.)
Joy Manufacturing Co
Original Assignee
Joy Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA477879A publication Critical patent/CA477879A/en
Expired legal-status Critical Current

Links

CA477879A Rock drills Expired CA477879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA477879T

Publications (1)

Publication Number Publication Date
CA477879A true CA477879A (en) 1951-10-16

Family

ID=35617528

Family Applications (1)

Application Number Title Priority Date Filing Date
CA477879A Expired CA477879A (en) Rock drills

Country Status (1)

Country Link
CA (1) CA477879A (en)

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