JPH044988U - - Google Patents

Info

Publication number
JPH044988U
JPH044988U JP4384890U JP4384890U JPH044988U JP H044988 U JPH044988 U JP H044988U JP 4384890 U JP4384890 U JP 4384890U JP 4384890 U JP4384890 U JP 4384890U JP H044988 U JPH044988 U JP H044988U
Authority
JP
Japan
Prior art keywords
wedge
drill
rod
drilling
attached
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
JP4384890U
Other languages
English (en)
Japanese (ja)
Other versions
JP2531078Y2 (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 JP1990043848U priority Critical patent/JP2531078Y2/ja
Publication of JPH044988U publication Critical patent/JPH044988U/ja
Application granted granted Critical
Publication of JP2531078Y2 publication Critical patent/JP2531078Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
JP1990043848U 1990-04-24 1990-04-24 掘削装置 Expired - Lifetime JP2531078Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990043848U JP2531078Y2 (ja) 1990-04-24 1990-04-24 掘削装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990043848U JP2531078Y2 (ja) 1990-04-24 1990-04-24 掘削装置

Publications (2)

Publication Number Publication Date
JPH044988U true JPH044988U (en]) 1992-01-17
JP2531078Y2 JP2531078Y2 (ja) 1997-04-02

Family

ID=31556619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990043848U Expired - Lifetime JP2531078Y2 (ja) 1990-04-24 1990-04-24 掘削装置

Country Status (1)

Country Link
JP (1) JP2531078Y2 (en])

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57174570U (en]) * 1981-04-24 1982-11-04
JPS61233197A (ja) * 1985-04-08 1986-10-17 玉田　真作育 掘削機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57174570U (en]) * 1981-04-24 1982-11-04
JPS61233197A (ja) * 1985-04-08 1986-10-17 玉田　真作育 掘削機

Also Published As

Publication number Publication date
JP2531078Y2 (ja) 1997-04-02

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