JPH02116588U - - Google Patents

Info

Publication number
JPH02116588U
JPH02116588U JP2602389U JP2602389U JPH02116588U JP H02116588 U JPH02116588 U JP H02116588U JP 2602389 U JP2602389 U JP 2602389U JP 2602389 U JP2602389 U JP 2602389U JP H02116588 U JPH02116588 U JP H02116588U
Authority
JP
Japan
Prior art keywords
tips
lengths
tip
core piece
center
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
JP2602389U
Other languages
English (en)
Japanese (ja)
Other versions
JP2540956Y2 (ja
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 JP1989026023U priority Critical patent/JP2540956Y2/ja
Publication of JPH02116588U publication Critical patent/JPH02116588U/ja
Application granted granted Critical
Publication of JP2540956Y2 publication Critical patent/JP2540956Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1989026023U 1989-03-07 1989-03-07 ロックドリルビット Expired - Lifetime JP2540956Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989026023U JP2540956Y2 (ja) 1989-03-07 1989-03-07 ロックドリルビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989026023U JP2540956Y2 (ja) 1989-03-07 1989-03-07 ロックドリルビット

Publications (2)

Publication Number Publication Date
JPH02116588U true JPH02116588U (en, 2012) 1990-09-18
JP2540956Y2 JP2540956Y2 (ja) 1997-07-09

Family

ID=31247269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989026023U Expired - Lifetime JP2540956Y2 (ja) 1989-03-07 1989-03-07 ロックドリルビット

Country Status (1)

Country Link
JP (1) JP2540956Y2 (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012237149A (ja) * 2011-05-12 2012-12-06 Okabe Co Ltd 穿孔ビット
JP2012237150A (ja) * 2011-05-12 2012-12-06 Okabe Co Ltd 穿孔ビット

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012237149A (ja) * 2011-05-12 2012-12-06 Okabe Co Ltd 穿孔ビット
JP2012237150A (ja) * 2011-05-12 2012-12-06 Okabe Co Ltd 穿孔ビット

Also Published As

Publication number Publication date
JP2540956Y2 (ja) 1997-07-09

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term