JPS531224Y2 - - Google Patents

Info

Publication number
JPS531224Y2
JPS531224Y2 JP1974041970U JP4197074U JPS531224Y2 JP S531224 Y2 JPS531224 Y2 JP S531224Y2 JP 1974041970 U JP1974041970 U JP 1974041970U JP 4197074 U JP4197074 U JP 4197074U JP S531224 Y2 JPS531224 Y2 JP S531224Y2
Authority
JP
Japan
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
JP1974041970U
Other languages
Japanese (ja)
Other versions
JPS50131139U (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 JP1974041970U priority Critical patent/JPS531224Y2/ja
Publication of JPS50131139U publication Critical patent/JPS50131139U/ja
Application granted granted Critical
Publication of JPS531224Y2 publication Critical patent/JPS531224Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP1974041970U 1974-04-15 1974-04-15 Expired JPS531224Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1974041970U JPS531224Y2 (en) 1974-04-15 1974-04-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1974041970U JPS531224Y2 (en) 1974-04-15 1974-04-15

Publications (2)

Publication Number Publication Date
JPS50131139U JPS50131139U (en) 1975-10-28
JPS531224Y2 true JPS531224Y2 (en) 1978-01-14

Family

ID=28170365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1974041970U Expired JPS531224Y2 (en) 1974-04-15 1974-04-15

Country Status (1)

Country Link
JP (1) JPS531224Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52128633A (en) * 1976-04-21 1977-10-28 Hitachi Construction Machinery Earth pressure control method of tunnel excavator
JPS6124622Y2 (en) * 1980-10-16 1986-07-23

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561223A (en) * 1968-07-09 1971-02-09 John R Tabor Tunneling machine with concrete wall forming mechanism
JPS4832194U (en) * 1971-08-19 1973-04-18
JPS4917029A (en) * 1972-06-10 1974-02-15

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561223A (en) * 1968-07-09 1971-02-09 John R Tabor Tunneling machine with concrete wall forming mechanism
JPS4832194U (en) * 1971-08-19 1973-04-18
JPS4917029A (en) * 1972-06-10 1974-02-15

Also Published As

Publication number Publication date
JPS50131139U (en) 1975-10-28

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