JPS6297897U - - Google Patents

Info

Publication number
JPS6297897U
JPS6297897U JP19075585U JP19075585U JPS6297897U JP S6297897 U JPS6297897 U JP S6297897U JP 19075585 U JP19075585 U JP 19075585U JP 19075585 U JP19075585 U JP 19075585U JP S6297897 U JPS6297897 U JP S6297897U
Authority
JP
Japan
Prior art keywords
ring body
opening
center
held
approximately
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.)
Pending
Application number
JP19075585U
Other languages
English (en)
Japanese (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 JP19075585U priority Critical patent/JPS6297897U/ja
Publication of JPS6297897U publication Critical patent/JPS6297897U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP19075585U 1985-12-11 1985-12-11 Pending JPS6297897U (US08063081-20111122-C00044.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19075585U JPS6297897U (US08063081-20111122-C00044.png) 1985-12-11 1985-12-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19075585U JPS6297897U (US08063081-20111122-C00044.png) 1985-12-11 1985-12-11

Publications (1)

Publication Number Publication Date
JPS6297897U true JPS6297897U (US08063081-20111122-C00044.png) 1987-06-22

Family

ID=31144269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19075585U Pending JPS6297897U (US08063081-20111122-C00044.png) 1985-12-11 1985-12-11

Country Status (1)

Country Link
JP (1) JPS6297897U (US08063081-20111122-C00044.png)

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