JPS61180286U - - Google Patents

Info

Publication number
JPS61180286U
JPS61180286U JP6054585U JP6054585U JPS61180286U JP S61180286 U JPS61180286 U JP S61180286U JP 6054585 U JP6054585 U JP 6054585U JP 6054585 U JP6054585 U JP 6054585U JP S61180286 U JPS61180286 U JP S61180286U
Authority
JP
Japan
Prior art keywords
bit
body made
polymerized
sandwich
outer periphery
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
JP6054585U
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 JP6054585U priority Critical patent/JPS61180286U/ja
Publication of JPS61180286U publication Critical patent/JPS61180286U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP6054585U 1985-04-23 1985-04-23 Pending JPS61180286U (US07345094-20080318-C00003.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6054585U JPS61180286U (US07345094-20080318-C00003.png) 1985-04-23 1985-04-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6054585U JPS61180286U (US07345094-20080318-C00003.png) 1985-04-23 1985-04-23

Publications (1)

Publication Number Publication Date
JPS61180286U true JPS61180286U (US07345094-20080318-C00003.png) 1986-11-10

Family

ID=30587991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6054585U Pending JPS61180286U (US07345094-20080318-C00003.png) 1985-04-23 1985-04-23

Country Status (1)

Country Link
JP (1) JPS61180286U (US07345094-20080318-C00003.png)

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