AU2330770A - Ring drilling device - Google Patents

Ring drilling device

Info

Publication number
AU2330770A
AU2330770A AU23307/70A AU2330770A AU2330770A AU 2330770 A AU2330770 A AU 2330770A AU 23307/70 A AU23307/70 A AU 23307/70A AU 2330770 A AU2330770 A AU 2330770A AU 2330770 A AU2330770 A AU 2330770A
Authority
AU
Australia
Prior art keywords
drilling device
ring drilling
ring
drilling
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
AU23307/70A
Other versions
AU463783B2 (en
Inventor
Gronfors Teuvo
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.)
Tampella Oy AB
Original Assignee
Tampella Oy AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tampella Oy AB filed Critical Tampella Oy AB
Application granted granted Critical
Publication of AU2330770A publication Critical patent/AU2330770A/en
Publication of AU463783B2 publication Critical patent/AU463783B2/en
Expired legal-status Critical Current

Links

AU23307/70A 1970-10-19 1970-12-14 Ring drilling device Expired AU463783B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FIFI2811/70 1970-10-19

Publications (2)

Publication Number Publication Date
AU2330770A true AU2330770A (en) 1972-06-15
AU463783B2 AU463783B2 (en) 1972-06-15

Family

ID=

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