FR2459474B1 - - Google Patents

Info

Publication number
FR2459474B1
FR2459474B1 FR7916813A FR7916813A FR2459474B1 FR 2459474 B1 FR2459474 B1 FR 2459474B1 FR 7916813 A FR7916813 A FR 7916813A FR 7916813 A FR7916813 A FR 7916813A FR 2459474 B1 FR2459474 B1 FR 2459474B1
Authority
FR
France
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
FR7916813A
Other languages
French (fr)
Other versions
FR2459474A1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7916813A priority Critical patent/FR2459474A1/fr
Publication of FR2459474A1 publication Critical patent/FR2459474A1/fr
Application granted granted Critical
Publication of FR2459474B1 publication Critical patent/FR2459474B1/fr
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
    • G01V3/10—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 using induction coils
    • G01V3/104—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 using induction coils using several coupled or uncoupled coils
    • G01V3/105—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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107—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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements

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 Current Or Voltage (AREA)
FR7916813A 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications Granted FR2459474A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7916813A FR2459474A1 (fr) 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7916813A FR2459474A1 (fr) 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications

Publications (2)

Publication Number Publication Date
FR2459474A1 FR2459474A1 (fr) 1981-01-09
FR2459474B1 true FR2459474B1 (OSRAM) 1984-06-01

Family

ID=9227262

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7916813A Granted FR2459474A1 (fr) 1979-06-19 1979-06-19 Appareils detecteurs de metaux a dispositif d'equilibrage electronique, pour la recherche dans le bois et le corps des animaux, ou autres applications

Country Status (1)

Country Link
FR (1) FR2459474A1 (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102127B (en) * 1981-05-07 1985-03-20 Mccormick Lab Inc Determining the position of a device inside biological tissue

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575447A (en) * 1947-10-04 1951-11-20 Rca Corp Fail-safe feature for balanced bridge indicators
US2711510A (en) * 1950-06-21 1955-06-21 Rca Corp Metal detector balance controls
US3758849A (en) * 1972-03-31 1973-09-11 Sperry Rand Corp Metal detector system having identical balanced field coil system on opposite sides of a detection zone

Also Published As

Publication number Publication date
FR2459474A1 (fr) 1981-01-09

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse