AU2812957A - Percussion drill bit for large holes - Google Patents

Percussion drill bit for large holes

Info

Publication number
AU2812957A
AU2812957A AU28129/57A AU2812957A AU2812957A AU 2812957 A AU2812957 A AU 2812957A AU 28129/57 A AU28129/57 A AU 28129/57A AU 2812957 A AU2812957 A AU 2812957A AU 2812957 A AU2812957 A AU 2812957A
Authority
AU
Australia
Prior art keywords
drill bit
large holes
percussion drill
percussion
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
AU28129/57A
Other versions
AU219167B2 (en
Inventor
Anders Hjalsten John
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.)
Sandvifcens Jernverks AB
Original Assignee
Sandvifcens Jernverks AB
Filing date
Publication date
Application filed by Sandvifcens Jernverks AB filed Critical Sandvifcens Jernverks AB
Application granted granted Critical
Publication of AU2812957A publication Critical patent/AU2812957A/en
Publication of AU219167B2 publication Critical patent/AU219167B2/en
Expired legal-status Critical Current

Links

AU28129/57A 1957-05-27 Percussion drill bit for large holes Expired AU219167B2 (en)

Publications (2)

Publication Number Publication Date
AU2812957A true AU2812957A (en) 1957-11-28
AU219167B2 AU219167B2 (en) 1957-11-28

Family

ID=

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