CA249541A - Trepan - Google Patents

Trepan

Info

Publication number
CA249541A
CA249541A CA249541A CA249541DA CA249541A CA 249541 A CA249541 A CA 249541A CA 249541 A CA249541 A CA 249541A CA 249541D A CA249541D A CA 249541DA CA 249541 A CA249541 A CA 249541A
Authority
CA
Canada
Prior art keywords
drill jar
jar
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
CA249541A
Other languages
English (en)
Inventor
A. Spang George
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 CA249541A publication Critical patent/CA249541A/fr
Expired legal-status Critical Current

Links

CA249541A Trepan Expired CA249541A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA249541T

Publications (1)

Publication Number Publication Date
CA249541A true CA249541A (fr) 1925-05-12

Family

ID=35156515

Family Applications (1)

Application Number Title Priority Date Filing Date
CA249541A Expired CA249541A (fr) Trepan

Country Status (1)

Country Link
CA (1) CA249541A (fr)

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