JPS62190783U - - Google Patents

Info

Publication number
JPS62190783U
JPS62190783U JP7976386U JP7976386U JPS62190783U JP S62190783 U JPS62190783 U JP S62190783U JP 7976386 U JP7976386 U JP 7976386U JP 7976386 U JP7976386 U JP 7976386U JP S62190783 U JPS62190783 U JP S62190783U
Authority
JP
Japan
Prior art keywords
bump
protrusion
bit
utility
same direction
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
JP7976386U
Other languages
English (en)
Japanese (ja)
Other versions
JPH04154Y2 (US20110009641A1-20110113-C00185.png
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 JP1986079763U priority Critical patent/JPH04154Y2/ja
Publication of JPS62190783U publication Critical patent/JPS62190783U/ja
Application granted granted Critical
Publication of JPH04154Y2 publication Critical patent/JPH04154Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
JP1986079763U 1986-05-26 1986-05-26 Expired JPH04154Y2 (US20110009641A1-20110113-C00185.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986079763U JPH04154Y2 (US20110009641A1-20110113-C00185.png) 1986-05-26 1986-05-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986079763U JPH04154Y2 (US20110009641A1-20110113-C00185.png) 1986-05-26 1986-05-26

Publications (2)

Publication Number Publication Date
JPS62190783U true JPS62190783U (US20110009641A1-20110113-C00185.png) 1987-12-04
JPH04154Y2 JPH04154Y2 (US20110009641A1-20110113-C00185.png) 1992-01-06

Family

ID=30929936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986079763U Expired JPH04154Y2 (US20110009641A1-20110113-C00185.png) 1986-05-26 1986-05-26

Country Status (1)

Country Link
JP (1) JPH04154Y2 (US20110009641A1-20110113-C00185.png)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895903A (US20110009641A1-20110113-C00185.png) * 1972-02-29 1973-12-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895903A (US20110009641A1-20110113-C00185.png) * 1972-02-29 1973-12-08

Also Published As

Publication number Publication date
JPH04154Y2 (US20110009641A1-20110113-C00185.png) 1992-01-06

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