JPS531601A - Double pipe type boring device - Google Patents

Double pipe type boring device

Info

Publication number
JPS531601A
JPS531601A JP7677776A JP7677776A JPS531601A JP S531601 A JPS531601 A JP S531601A JP 7677776 A JP7677776 A JP 7677776A JP 7677776 A JP7677776 A JP 7677776A JP S531601 A JPS531601 A JP S531601A
Authority
JP
Japan
Prior art keywords
double pipe
pipe type
boring device
type boring
double
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
JP7677776A
Other languages
Japanese (ja)
Inventor
Haruo Ooshika
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koken Boring Machine Co Ltd
Original Assignee
Koken Boring Machine Co Ltd
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 by Koken Boring Machine Co Ltd filed Critical Koken Boring Machine Co Ltd
Priority to JP7677776A priority Critical patent/JPS531601A/en
Publication of JPS531601A publication Critical patent/JPS531601A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP7677776A 1976-06-28 1976-06-28 Double pipe type boring device Pending JPS531601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7677776A JPS531601A (en) 1976-06-28 1976-06-28 Double pipe type boring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7677776A JPS531601A (en) 1976-06-28 1976-06-28 Double pipe type boring device

Publications (1)

Publication Number Publication Date
JPS531601A true JPS531601A (en) 1978-01-09

Family

ID=13615013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7677776A Pending JPS531601A (en) 1976-06-28 1976-06-28 Double pipe type boring device

Country Status (1)

Country Link
JP (1) JPS531601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56128897A (en) * 1980-03-11 1981-10-08 Kajima Corp Discharge of excavated earth
KR20170028421A (en) 2014-10-02 2017-03-13 히다찌 겐끼 가부시키가이샤 Hydraulic drive system of industrial machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56128897A (en) * 1980-03-11 1981-10-08 Kajima Corp Discharge of excavated earth
JPS6249434B2 (en) * 1980-03-11 1987-10-19 Kajima Corp
KR20170028421A (en) 2014-10-02 2017-03-13 히다찌 겐끼 가부시키가이샤 Hydraulic drive system of industrial machine

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