CA632190A - Tunneling device - Google Patents

Tunneling device

Info

Publication number
CA632190A
CA632190A CA632190A CA632190DA CA632190A CA 632190 A CA632190 A CA 632190A CA 632190 A CA632190 A CA 632190A CA 632190D A CA632190D A CA 632190DA CA 632190 A CA632190 A CA 632190A
Authority
CA
Canada
Prior art keywords
tunneling device
tunneling
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
CA632190A
Inventor
A. Morlan Erwin
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.)
Hughes Tool Co
Original Assignee
Hughes Tool Co
Publication date
Application granted granted Critical
Publication of CA632190A publication Critical patent/CA632190A/en
Expired legal-status Critical Current

Links

CA632190A Tunneling device Expired CA632190A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA632190T

Publications (1)

Publication Number Publication Date
CA632190A true CA632190A (en) 1961-12-05

Family

ID=35888338

Family Applications (1)

Application Number Title Priority Date Filing Date
CA632190A Expired CA632190A (en) Tunneling device

Country Status (1)

Country Link
CA (1) CA632190A (en)

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