CA352840A - Fleuret de perforatrice a roc - Google Patents

Fleuret de perforatrice a roc

Info

Publication number
CA352840A
CA352840A CA352840A CA352840DA CA352840A CA 352840 A CA352840 A CA 352840A CA 352840 A CA352840 A CA 352840A CA 352840D A CA352840D A CA 352840DA CA 352840 A CA352840 A CA 352840A
Authority
CA
Canada
Prior art keywords
drill bit
rock drill
rock
bit
drill
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
CA352840A
Other languages
English (en)
Inventor
S. Hart Raymond
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.)
GRACE E HARGREAVES
Original Assignee
GRACE E HARGREAVES
Publication date
Application granted granted Critical
Publication of CA352840A publication Critical patent/CA352840A/fr
Expired legal-status Critical Current

Links

CA352840A Fleuret de perforatrice a roc Expired CA352840A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA352840T

Publications (1)

Publication Number Publication Date
CA352840A true CA352840A (fr) 1935-09-03

Family

ID=35340802

Family Applications (1)

Application Number Title Priority Date Filing Date
CA352840A Expired CA352840A (fr) Fleuret de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA352840A (fr)

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