JPS6447892U - - Google Patents

Info

Publication number
JPS6447892U
JPS6447892U JP14290787U JP14290787U JPS6447892U JP S6447892 U JPS6447892 U JP S6447892U JP 14290787 U JP14290787 U JP 14290787U JP 14290787 U JP14290787 U JP 14290787U JP S6447892 U JPS6447892 U JP S6447892U
Authority
JP
Japan
Prior art keywords
base
chips
tip
edges
ring bit
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.)
Granted
Application number
JP14290787U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0340956Y2 (un
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 filed Critical
Priority to JP14290787U priority Critical patent/JPH0340956Y2/ja
Publication of JPS6447892U publication Critical patent/JPS6447892U/ja
Application granted granted Critical
Publication of JPH0340956Y2 publication Critical patent/JPH0340956Y2/ja
Expired legal-status Critical Current

Links

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  • Earth Drilling (AREA)
JP14290787U 1987-09-17 1987-09-17 Expired JPH0340956Y2 (un)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14290787U JPH0340956Y2 (un) 1987-09-17 1987-09-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14290787U JPH0340956Y2 (un) 1987-09-17 1987-09-17

Publications (2)

Publication Number Publication Date
JPS6447892U true JPS6447892U (un) 1989-03-24
JPH0340956Y2 JPH0340956Y2 (un) 1991-08-28

Family

ID=31409250

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14290787U Expired JPH0340956Y2 (un) 1987-09-17 1987-09-17

Country Status (1)

Country Link
JP (1) JPH0340956Y2 (un)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH044986U (un) * 1990-04-24 1992-01-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH044986U (un) * 1990-04-24 1992-01-17

Also Published As

Publication number Publication date
JPH0340956Y2 (un) 1991-08-28

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