JPS6442388U - - Google Patents

Info

Publication number
JPS6442388U
JPS6442388U JP13325987U JP13325987U JPS6442388U JP S6442388 U JPS6442388 U JP S6442388U JP 13325987 U JP13325987 U JP 13325987U JP 13325987 U JP13325987 U JP 13325987U JP S6442388 U JPS6442388 U JP S6442388U
Authority
JP
Japan
Prior art keywords
rod
casing
drilling device
little
drilling
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
JP13325987U
Other languages
English (en)
Japanese (ja)
Other versions
JPH061665Y2 (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 JP13325987U priority Critical patent/JPH061665Y2/ja
Publication of JPS6442388U publication Critical patent/JPS6442388U/ja
Application granted granted Critical
Publication of JPH061665Y2 publication Critical patent/JPH061665Y2/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)
JP13325987U 1987-09-02 1987-09-02 穿孔装置 Expired - Lifetime JPH061665Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13325987U JPH061665Y2 (ja) 1987-09-02 1987-09-02 穿孔装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13325987U JPH061665Y2 (ja) 1987-09-02 1987-09-02 穿孔装置

Publications (2)

Publication Number Publication Date
JPS6442388U true JPS6442388U (enrdf_load_stackoverflow) 1989-03-14
JPH061665Y2 JPH061665Y2 (ja) 1994-01-12

Family

ID=31390955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13325987U Expired - Lifetime JPH061665Y2 (ja) 1987-09-02 1987-09-02 穿孔装置

Country Status (1)

Country Link
JP (1) JPH061665Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH061665Y2 (ja) 1994-01-12

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