AU146644B2 - Improvements inthe sharpening of chisel-shaped rock drilling bits having inserted cutting formations - Google Patents

Improvements inthe sharpening of chisel-shaped rock drilling bits having inserted cutting formations

Info

Publication number
AU146644B2
AU146644B2 AU33966/50A AU3396650A AU146644B2 AU 146644 B2 AU146644 B2 AU 146644B2 AU 33966/50 A AU33966/50 A AU 33966/50A AU 3396650 A AU3396650 A AU 3396650A AU 146644 B2 AU146644 B2 AU 146644B2
Authority
AU
Australia
Prior art keywords
chisel
sharpening
rock drilling
drilling bits
improvements inthe
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
AU33966/50A
Other versions
AU3396650A (en
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.)
Boart International Ltd
Original Assignee
Boart Products South Africa Ltd
Filing date
Publication date
Application filed by Boart Products South Africa Ltd filed Critical Boart Products South Africa Ltd
Application granted granted Critical
Publication of AU146644B2 publication Critical patent/AU146644B2/en
Publication of AU3396650A publication Critical patent/AU3396650A/en
Expired legal-status Critical Current

Links

AU33966/50A 1950-04-27 Improvements inthe sharpening of chisel-shaped rock drilling bits having inserted cutting formations Expired AU146644B2 (en)

Publications (2)

Publication Number Publication Date
AU146644B2 true AU146644B2 (en) 1950-06-29
AU3396650A AU3396650A (en) 1950-06-29

Family

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