JPS6129828Y2 - - Google Patents

Info

Publication number
JPS6129828Y2
JPS6129828Y2 JP15467080U JP15467080U JPS6129828Y2 JP S6129828 Y2 JPS6129828 Y2 JP S6129828Y2 JP 15467080 U JP15467080 U JP 15467080U JP 15467080 U JP15467080 U JP 15467080U JP S6129828 Y2 JPS6129828 Y2 JP S6129828Y2
Authority
JP
Japan
Prior art keywords
underground
propulsion
propulsion device
hole
piston
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
JP15467080U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5779687U (US20020051482A1-20020502-M00012.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 JP15467080U priority Critical patent/JPS6129828Y2/ja
Publication of JPS5779687U publication Critical patent/JPS5779687U/ja
Application granted granted Critical
Publication of JPS6129828Y2 publication Critical patent/JPS6129828Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP15467080U 1980-10-28 1980-10-28 Expired JPS6129828Y2 (US20020051482A1-20020502-M00012.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15467080U JPS6129828Y2 (US20020051482A1-20020502-M00012.png) 1980-10-28 1980-10-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15467080U JPS6129828Y2 (US20020051482A1-20020502-M00012.png) 1980-10-28 1980-10-28

Publications (2)

Publication Number Publication Date
JPS5779687U JPS5779687U (US20020051482A1-20020502-M00012.png) 1982-05-17
JPS6129828Y2 true JPS6129828Y2 (US20020051482A1-20020502-M00012.png) 1986-09-02

Family

ID=29513892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15467080U Expired JPS6129828Y2 (US20020051482A1-20020502-M00012.png) 1980-10-28 1980-10-28

Country Status (1)

Country Link
JP (1) JPS6129828Y2 (US20020051482A1-20020502-M00012.png)

Also Published As

Publication number Publication date
JPS5779687U (US20020051482A1-20020502-M00012.png) 1982-05-17

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