CA309335A - Earth boring apparatus - Google Patents

Earth boring apparatus

Info

Publication number
CA309335A
CA309335A CA309335A CA309335DA CA309335A CA 309335 A CA309335 A CA 309335A CA 309335 A CA309335 A CA 309335A CA 309335D A CA309335D A CA 309335DA CA 309335 A CA309335 A CA 309335A
Authority
CA
Canada
Prior art keywords
earth boring
boring apparatus
earth
boring
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
CA309335A
Other languages
French (fr)
Inventor
Burkhardt Emil
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.)
Vereinigte Stahlwerke AG
Original Assignee
Vereinigte Stahlwerke AG
Publication date
Application granted granted Critical
Publication of CA309335A publication Critical patent/CA309335A/en
Expired legal-status Critical Current

Links

CA309335A Earth boring apparatus Expired CA309335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA309335T

Publications (1)

Publication Number Publication Date
CA309335A true CA309335A (en) 1931-03-10

Family

ID=35268658

Family Applications (1)

Application Number Title Priority Date Filing Date
CA309335A Expired CA309335A (en) Earth boring apparatus

Country Status (1)

Country Link
CA (1) CA309335A (en)

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