CA308205A - Drill hole compass - Google Patents

Drill hole compass

Info

Publication number
CA308205A
CA308205A CA308205A CA308205DA CA308205A CA 308205 A CA308205 A CA 308205A CA 308205 A CA308205 A CA 308205A CA 308205D A CA308205D A CA 308205DA CA 308205 A CA308205 A CA 308205A
Authority
CA
Canada
Prior art keywords
drill hole
compass
hole compass
drill
hole
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
CA308205A
Other languages
French (fr)
Inventor
Edwin L. Derby, Jr.
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.)
ROSE MAAS
Original Assignee
ROSE MAAS
Publication date
Application granted granted Critical
Publication of CA308205A publication Critical patent/CA308205A/en
Expired legal-status Critical Current

Links

CA308205A Drill hole compass Expired CA308205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA308205T

Publications (1)

Publication Number Publication Date
CA308205A true CA308205A (en) 1931-01-27

Family

ID=35261358

Family Applications (1)

Application Number Title Priority Date Filing Date
CA308205A Expired CA308205A (en) Drill hole compass

Country Status (1)

Country Link
CA (1) CA308205A (en)

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