CA874843A - Valve-type percussion drill bit - Google Patents

Valve-type percussion drill bit

Info

Publication number
CA874843A
CA874843A CA874843A CA874843DA CA874843A CA 874843 A CA874843 A CA 874843A CA 874843 A CA874843 A CA 874843A CA 874843D A CA874843D A CA 874843DA CA 874843 A CA874843 A CA 874843A
Authority
CA
Canada
Prior art keywords
valve
drill bit
percussion drill
type percussion
type
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
CA874843A
Inventor
G. Gatien Paul
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 CA874843A publication Critical patent/CA874843A/en
Expired legal-status Critical Current

Links

CA874843A Valve-type percussion drill bit Expired CA874843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA874843T

Publications (1)

Publication Number Publication Date
CA874843A true CA874843A (en) 1971-07-06

Family

ID=36360769

Family Applications (1)

Application Number Title Priority Date Filing Date
CA874843A Expired CA874843A (en) Valve-type percussion drill bit

Country Status (1)

Country Link
CA (1) CA874843A (en)

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