AU240131A - Improvements in hammer rock drills - Google Patents

Improvements in hammer rock drills

Info

Publication number
AU240131A
AU240131A AU2401/31A AU240131A AU240131A AU 240131 A AU240131 A AU 240131A AU 2401/31 A AU2401/31 A AU 2401/31A AU 240131 A AU240131 A AU 240131A AU 240131 A AU240131 A AU 240131A
Authority
AU
Australia
Prior art keywords
rock drills
hammer rock
hammer
drills
rock
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
AU2401/31A
Inventor
Bergstrom Gunnar
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.)
Rock Drill Inventions Coty) Ltd
Original Assignee
Rock Drill Inventions Coty) Ltd
Filing date
Publication date
Application filed by Rock Drill Inventions Coty) Ltd filed Critical Rock Drill Inventions Coty) Ltd
Publication of AU240131A publication Critical patent/AU240131A/en
Expired legal-status Critical Current

Links

AU2401/31A 1931-06-02 Improvements in hammer rock drills Expired AU240131A (en)

Publications (1)

Publication Number Publication Date
AU240131A true AU240131A (en) 1932-06-09

Family

ID=

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