JPS6257230B2 - - Google Patents

Info

Publication number
JPS6257230B2
JPS6257230B2 JP56001949A JP194981A JPS6257230B2 JP S6257230 B2 JPS6257230 B2 JP S6257230B2 JP 56001949 A JP56001949 A JP 56001949A JP 194981 A JP194981 A JP 194981A JP S6257230 B2 JPS6257230 B2 JP S6257230B2
Authority
JP
Japan
Prior art keywords
pipe
main pipe
opening
electrodes
electrode
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
Application number
JP56001949A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57116278A (en
Inventor
Fumio Yamauchi
Tokunori Miura
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP56001949A priority Critical patent/JPS57116278A/ja
Publication of JPS57116278A publication Critical patent/JPS57116278A/ja
Publication of JPS6257230B2 publication Critical patent/JPS6257230B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/088—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with electric fields

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP56001949A 1981-01-10 1981-01-10 Device for detecting opening part of pipe Granted JPS57116278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56001949A JPS57116278A (en) 1981-01-10 1981-01-10 Device for detecting opening part of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56001949A JPS57116278A (en) 1981-01-10 1981-01-10 Device for detecting opening part of pipe

Publications (2)

Publication Number Publication Date
JPS57116278A JPS57116278A (en) 1982-07-20
JPS6257230B2 true JPS6257230B2 (tr) 1987-11-30

Family

ID=11515852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56001949A Granted JPS57116278A (en) 1981-01-10 1981-01-10 Device for detecting opening part of pipe

Country Status (1)

Country Link
JP (1) JPS57116278A (tr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164733U (tr) * 1987-04-15 1988-10-27

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951301A (ja) * 1982-09-17 1984-03-24 Furuhama Shoichi シリンダ内周面とピストンリング外周面の油膜厚さ測定法
IT1174454B (it) * 1984-01-06 1987-07-01 Montedison Spa Composti ad attivita'antidotica per la difesa di culture agrarie dall'azione di erbicidi non seletivi
JPH01280286A (ja) * 1988-05-02 1989-11-10 Kyokuto Kaihatsu Kogyo Co Ltd 埋設物探知方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164733U (tr) * 1987-04-15 1988-10-27

Also Published As

Publication number Publication date
JPS57116278A (en) 1982-07-20

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