CA296445A - Support de vis d'avance de perforatrice a roc - Google Patents

Support de vis d'avance de perforatrice a roc

Info

Publication number
CA296445A
CA296445A CA296445A CA296445DA CA296445A CA 296445 A CA296445 A CA 296445A CA 296445 A CA296445 A CA 296445A CA 296445D A CA296445D A CA 296445DA CA 296445 A CA296445 A CA 296445A
Authority
CA
Canada
Prior art keywords
feed screw
screw support
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
CA296445A
Other languages
English (en)
Inventor
Vercoe Haight Harry
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
Publication date
Application granted granted Critical
Publication of CA296445A publication Critical patent/CA296445A/fr
Expired legal-status Critical Current

Links

CA296445A Support de vis d'avance de perforatrice a roc Expired CA296445A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA296445T

Publications (1)

Publication Number Publication Date
CA296445A true CA296445A (fr) 1930-01-07

Family

ID=35233763

Family Applications (1)

Application Number Title Priority Date Filing Date
CA296445A Expired CA296445A (fr) Support de vis d'avance de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA296445A (fr)

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