JPS4898619A - - Google Patents

Info

Publication number
JPS4898619A
JPS4898619A JP2980972A JP2980972A JPS4898619A JP S4898619 A JPS4898619 A JP S4898619A JP 2980972 A JP2980972 A JP 2980972A JP 2980972 A JP2980972 A JP 2980972A JP S4898619 A JPS4898619 A JP S4898619A
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
JP2980972A
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 JP2980972A priority Critical patent/JPS4898619A/ja
Publication of JPS4898619A publication Critical patent/JPS4898619A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP2980972A 1972-03-27 1972-03-27 Pending JPS4898619A (cg-RX-API-DMAC7.html)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2980972A JPS4898619A (cg-RX-API-DMAC7.html) 1972-03-27 1972-03-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2980972A JPS4898619A (cg-RX-API-DMAC7.html) 1972-03-27 1972-03-27

Publications (1)

Publication Number Publication Date
JPS4898619A true JPS4898619A (cg-RX-API-DMAC7.html) 1973-12-14

Family

ID=12286337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2980972A Pending JPS4898619A (cg-RX-API-DMAC7.html) 1972-03-27 1972-03-27

Country Status (1)

Country Link
JP (1) JPS4898619A (cg-RX-API-DMAC7.html)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232360A (en) * 1963-11-04 1966-02-01 Mobile Drilling Co Inc Bore positioning method and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232360A (en) * 1963-11-04 1966-02-01 Mobile Drilling Co Inc Bore positioning method and apparatus

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