JPH0357431B2 - - Google Patents

Info

Publication number
JPH0357431B2
JPH0357431B2 JP59119267A JP11926784A JPH0357431B2 JP H0357431 B2 JPH0357431 B2 JP H0357431B2 JP 59119267 A JP59119267 A JP 59119267A JP 11926784 A JP11926784 A JP 11926784A JP H0357431 B2 JPH0357431 B2 JP H0357431B2
Authority
JP
Japan
Prior art keywords
pipe
branch pipe
receiving antenna
antenna
transmitting antenna
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 - Lifetime
Application number
JP59119267A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60262085A (ja
Inventor
Kazuo Kanai
Masayuki Matsura
Noryuki Itakura
Shigeru Takahashi
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.)
Tokyo Gas Co Ltd
Original Assignee
Tokyo Gas 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 Tokyo Gas Co Ltd filed Critical Tokyo Gas Co Ltd
Priority to JP59119267A priority Critical patent/JPS60262085A/ja
Publication of JPS60262085A publication Critical patent/JPS60262085A/ja
Publication of JPH0357431B2 publication Critical patent/JPH0357431B2/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
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using AC

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP59119267A 1984-06-11 1984-06-11 埋設管に於ける分岐管の検知方法 Granted JPS60262085A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59119267A JPS60262085A (ja) 1984-06-11 1984-06-11 埋設管に於ける分岐管の検知方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59119267A JPS60262085A (ja) 1984-06-11 1984-06-11 埋設管に於ける分岐管の検知方法

Publications (2)

Publication Number Publication Date
JPS60262085A JPS60262085A (ja) 1985-12-25
JPH0357431B2 true JPH0357431B2 (enExample) 1991-09-02

Family

ID=14757113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59119267A Granted JPS60262085A (ja) 1984-06-11 1984-06-11 埋設管に於ける分岐管の検知方法

Country Status (1)

Country Link
JP (1) JPS60262085A (enExample)

Also Published As

Publication number Publication date
JPS60262085A (ja) 1985-12-25

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