CA74578A - Foret a mine - Google Patents

Foret a mine

Info

Publication number
CA74578A
CA74578A CA000074578A CA74578DA CA74578A CA 74578 A CA74578 A CA 74578A CA 000074578 A CA000074578 A CA 000074578A CA 74578D A CA74578D A CA 74578DA CA 74578 A CA74578 A CA 74578A
Authority
CA
Canada
Prior art keywords
rock drill
drill
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
CA000074578A
Other languages
English (en)
Inventor
Russell Avery
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.)
Avery Drill Co
Original Assignee
Avery Drill Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Avery Drill Co filed Critical Avery Drill Co
Application granted granted Critical
Publication of CA74578A publication Critical patent/CA74578A/fr
Expired legal-status Critical Current

Links

CA000074578A 1902-01-07 1902-01-07 Foret a mine Expired CA74578A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA74578T 1902-01-07

Publications (1)

Publication Number Publication Date
CA74578A true CA74578A (fr) 1902-01-28

Family

ID=45191114

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000074578A Expired CA74578A (fr) 1902-01-07 1902-01-07 Foret a mine

Country Status (1)

Country Link
CA (1) CA74578A (fr)

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