JPS492313A - - Google Patents

Info

Publication number
JPS492313A
JPS492313A JP4189972A JP4189972A JPS492313A JP S492313 A JPS492313 A JP S492313A JP 4189972 A JP4189972 A JP 4189972A JP 4189972 A JP4189972 A JP 4189972A JP S492313 A JPS492313 A JP S492313A
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.)
Pending
Application number
JP4189972A
Other languages
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 JP4189972A priority Critical patent/JPS492313A/ja
Publication of JPS492313A publication Critical patent/JPS492313A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP4189972A 1972-04-24 1972-04-24 Pending JPS492313A (enExample)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4189972A JPS492313A (enExample) 1972-04-24 1972-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4189972A JPS492313A (enExample) 1972-04-24 1972-04-24

Publications (1)

Publication Number Publication Date
JPS492313A true JPS492313A (enExample) 1974-01-10

Family

ID=12621121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4189972A Pending JPS492313A (enExample) 1972-04-24 1972-04-24

Country Status (1)

Country Link
JP (1) JPS492313A (enExample)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967401A (en) * 1955-03-16 1961-01-10 American Marietta Co Apparatus for jacking tunnels

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967401A (en) * 1955-03-16 1961-01-10 American Marietta Co Apparatus for jacking tunnels

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