JPH0545673Y2 - - Google Patents

Info

Publication number
JPH0545673Y2
JPH0545673Y2 JP1987092712U JP9271287U JPH0545673Y2 JP H0545673 Y2 JPH0545673 Y2 JP H0545673Y2 JP 1987092712 U JP1987092712 U JP 1987092712U JP 9271287 U JP9271287 U JP 9271287U JP H0545673 Y2 JPH0545673 Y2 JP H0545673Y2
Authority
JP
Japan
Prior art keywords
ace
cutter
slit opening
pipe
mud
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 - Lifetime
Application number
JP1987092712U
Other languages
English (en)
Japanese (ja)
Other versions
JPS64698U (en]
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 JP1987092712U priority Critical patent/JPH0545673Y2/ja
Publication of JPS64698U publication Critical patent/JPS64698U/ja
Application granted granted Critical
Publication of JPH0545673Y2 publication Critical patent/JPH0545673Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP1987092712U 1987-06-18 1987-06-18 Expired - Lifetime JPH0545673Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987092712U JPH0545673Y2 (en]) 1987-06-18 1987-06-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987092712U JPH0545673Y2 (en]) 1987-06-18 1987-06-18

Publications (2)

Publication Number Publication Date
JPS64698U JPS64698U (en]) 1989-01-05
JPH0545673Y2 true JPH0545673Y2 (en]) 1993-11-24

Family

ID=30954658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987092712U Expired - Lifetime JPH0545673Y2 (en]) 1987-06-18 1987-06-18

Country Status (1)

Country Link
JP (1) JPH0545673Y2 (en])

Also Published As

Publication number Publication date
JPS64698U (en]) 1989-01-05

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