CA160309A - Meche pour forets a roc - Google Patents

Meche pour forets a roc

Info

Publication number
CA160309A
CA160309A CA000160309A CA160309DA CA160309A CA 160309 A CA160309 A CA 160309A CA 000160309 A CA000160309 A CA 000160309A CA 160309D A CA160309D A CA 160309DA CA 160309 A CA160309 A CA 160309A
Authority
CA
Canada
Prior art keywords
bit
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
CA000160309A
Other languages
English (en)
Inventor
William T. Derwood
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
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA160309A publication Critical patent/CA160309A/fr
Expired legal-status Critical Current

Links

CA000160309A 1914-06-04 1914-06-04 Meche pour forets a roc Expired CA160309A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA160309T 1914-06-04

Publications (1)

Publication Number Publication Date
CA160309A true CA160309A (fr) 1915-01-26

Family

ID=45280013

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000160309A Expired CA160309A (fr) 1914-06-04 1914-06-04 Meche pour forets a roc

Country Status (1)

Country Link
CA (1) CA160309A (fr)

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