CA635156A - Rotary drill heads - Google Patents

Rotary drill heads

Info

Publication number
CA635156A
CA635156A CA635156A CA635156DA CA635156A CA 635156 A CA635156 A CA 635156A CA 635156 A CA635156 A CA 635156A CA 635156D A CA635156D A CA 635156DA CA 635156 A CA635156 A CA 635156A
Authority
CA
Canada
Prior art keywords
rotary drill
drill heads
heads
rotary
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
CA635156A
Inventor
A. Taylor Cecil
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.)
Rawlplug Co Ltd
Original Assignee
Rawlplug Co Ltd
Publication date
Application granted granted Critical
Publication of CA635156A publication Critical patent/CA635156A/en
Expired legal-status Critical Current

Links

CA635156A Rotary drill heads Expired CA635156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA635156T

Publications (1)

Publication Number Publication Date
CA635156A true CA635156A (en) 1962-01-23

Family

ID=35891342

Family Applications (1)

Application Number Title Priority Date Filing Date
CA635156A Expired CA635156A (en) Rotary drill heads

Country Status (1)

Country Link
CA (1) CA635156A (en)

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