JPS6233820Y2 - - Google Patents

Info

Publication number
JPS6233820Y2
JPS6233820Y2 JP1978147291U JP14729178U JPS6233820Y2 JP S6233820 Y2 JPS6233820 Y2 JP S6233820Y2 JP 1978147291 U JP1978147291 U JP 1978147291U JP 14729178 U JP14729178 U JP 14729178U JP S6233820 Y2 JPS6233820 Y2 JP S6233820Y2
Authority
JP
Japan
Prior art keywords
gripping device
drill pipe
pipe
drilling
hole
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.)
Expired
Application number
JP1978147291U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5562692U (da
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 JP1978147291U priority Critical patent/JPS6233820Y2/ja
Publication of JPS5562692U publication Critical patent/JPS5562692U/ja
Application granted granted Critical
Publication of JPS6233820Y2 publication Critical patent/JPS6233820Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1978147291U 1978-10-26 1978-10-26 Expired JPS6233820Y2 (da)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1978147291U JPS6233820Y2 (da) 1978-10-26 1978-10-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1978147291U JPS6233820Y2 (da) 1978-10-26 1978-10-26

Publications (2)

Publication Number Publication Date
JPS5562692U JPS5562692U (da) 1980-04-28
JPS6233820Y2 true JPS6233820Y2 (da) 1987-08-29

Family

ID=29128613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1978147291U Expired JPS6233820Y2 (da) 1978-10-26 1978-10-26

Country Status (1)

Country Link
JP (1) JPS6233820Y2 (da)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107201A (ja) * 1975-03-18 1976-09-22 Furukawa Kogyo Kk Sakukoki

Also Published As

Publication number Publication date
JPS5562692U (da) 1980-04-28

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