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AU246284B2 - Improved method of and apparatus for drilling interpenetrating parallel holes - Google Patents
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AU246284B2 - Improved method of and apparatus for drilling interpenetrating parallel holes - Google Patents

Improved method of and apparatus for drilling interpenetrating parallel holes

Info

Publication number
AU246284B2
AU246284B2 AU53282/59A AU5328259A AU246284B2 AU 246284 B2 AU246284 B2 AU 246284B2 AU 53282/59 A AU53282/59 A AU 53282/59A AU 5328259 A AU5328259 A AU 5328259A AU 246284 B2 AU246284 B2 AU 246284B2
Authority
AU
Australia
Prior art keywords
interpenetrating
drilling
improved method
parallel holes
holes
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
AU53282/59A
Other versions
AU5328259A (en
Inventor
Gustav August Hagstrom and Bengt Paul Bjornson Nils
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.)
Sandvikens Jemverks AB
Original Assignee
Sandvikens Jemverks AB
Filing date
Publication date
Application filed by Sandvikens Jemverks AB filed Critical Sandvikens Jemverks AB
Application granted granted Critical
Publication of AU5328259A publication Critical patent/AU5328259A/en
Publication of AU246284B2 publication Critical patent/AU246284B2/en
Expired legal-status Critical Current

Links

AU53282/59A 1959-09-30 Improved method of and apparatus for drilling interpenetrating parallel holes Expired AU246284B2 (en)

Publications (2)

Publication Number Publication Date
AU5328259A AU5328259A (en) 1960-03-31
AU246284B2 true AU246284B2 (en) 1960-03-31

Family

ID=

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