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AU217881B2 - Improvements relating to rock drilling machinery - Google Patents
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AU217881B2 - Improvements relating to rock drilling machinery - Google Patents

Improvements relating to rock drilling machinery

Info

Publication number
AU217881B2
AU217881B2 AU22950/56A AU2295056A AU217881B2 AU 217881 B2 AU217881 B2 AU 217881B2 AU 22950/56 A AU22950/56 A AU 22950/56A AU 2295056 A AU2295056 A AU 2295056A AU 217881 B2 AU217881 B2 AU 217881B2
Authority
AU
Australia
Prior art keywords
rock drilling
improvements relating
drilling machinery
machinery
relating
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
AU22950/56A
Other versions
AU2295056A (en
Inventor
Reginald Penberthy and Douglas Bernard Smith Walter
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.)
CLIMAX ROCK DRILL AND ENGINEERING WORKS Ltd
Original Assignee
CLIMAX ROCK DRILL AND ENGINEERING WORKS Ltd
Filing date
Publication date
Application filed by CLIMAX ROCK DRILL AND ENGINEERING WORKS Ltd filed Critical CLIMAX ROCK DRILL AND ENGINEERING WORKS Ltd
Application granted granted Critical
Publication of AU217881B2 publication Critical patent/AU217881B2/en
Publication of AU2295056A publication Critical patent/AU2295056A/en
Expired legal-status Critical Current

Links

AU22950/56A 1956-11-06 Improvements relating to rock drilling machinery Expired AU217881B2 (en)

Publications (2)

Publication Number Publication Date
AU217881B2 true AU217881B2 (en) 1957-05-09
AU2295056A AU2295056A (en) 1957-05-09

Family

ID=

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