CA299619A - Appareil a elargir les forets de perforatrice a roc - Google Patents

Appareil a elargir les forets de perforatrice a roc

Info

Publication number
CA299619A
CA299619A CA299619A CA299619DA CA299619A CA 299619 A CA299619 A CA 299619A CA 299619 A CA299619 A CA 299619A CA 299619D A CA299619D A CA 299619DA CA 299619 A CA299619 A CA 299619A
Authority
CA
Canada
Prior art keywords
enlarging
bores
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
CA299619A
Other languages
English (en)
Inventor
De Hele St. Stephens Raynar
Climax Rock Drill And Engineering Works Limited The
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA299619A publication Critical patent/CA299619A/fr
Expired legal-status Critical Current

Links

CA299619A Appareil a elargir les forets de perforatrice a roc Expired CA299619A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA299619T

Publications (1)

Publication Number Publication Date
CA299619A true CA299619A (fr) 1930-04-22

Family

ID=35236938

Family Applications (1)

Application Number Title Priority Date Filing Date
CA299619A Expired CA299619A (fr) Appareil a elargir les forets de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA299619A (fr)

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