CA517956A - Tariere de perforatrice au rocher - Google Patents

Tariere de perforatrice au rocher

Info

Publication number
CA517956A
CA517956A CA517956A CA517956DA CA517956A CA 517956 A CA517956 A CA 517956A CA 517956 A CA517956 A CA 517956A CA 517956D A CA517956D A CA 517956DA CA 517956 A CA517956 A CA 517956A
Authority
CA
Canada
Prior art keywords
auger
drill bit
rock drill
rock
bit
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
CA517956A
Other languages
English (en)
Inventor
A. Hayden Ernest
L. Cory Frank
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 CA517956A publication Critical patent/CA517956A/fr
Expired legal-status Critical Current

Links

CA517956A Tariere de perforatrice au rocher Expired CA517956A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA517956T

Publications (1)

Publication Number Publication Date
CA517956A true CA517956A (fr) 1955-11-01

Family

ID=35671157

Family Applications (1)

Application Number Title Priority Date Filing Date
CA517956A Expired CA517956A (fr) Tariere de perforatrice au rocher

Country Status (1)

Country Link
CA (1) CA517956A (fr)

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