FR2042404A1 - - Google Patents

Info

Publication number
FR2042404A1
FR2042404A1 FR7016156A FR7016156A FR2042404A1 FR 2042404 A1 FR2042404 A1 FR 2042404A1 FR 7016156 A FR7016156 A FR 7016156A FR 7016156 A FR7016156 A FR 7016156A FR 2042404 A1 FR2042404 A1 FR 2042404A1
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.)
Withdrawn
Application number
FR7016156A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of FR2042404A1 publication Critical patent/FR2042404A1/fr
Withdrawn legal-status Critical Current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)
  • Burglar Alarm Systems (AREA)
FR7016156A 1969-05-05 1970-05-04 Withdrawn FR2042404A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82186869A 1969-05-05 1969-05-05

Publications (1)

Publication Number Publication Date
FR2042404A1 true FR2042404A1 (fr) 1971-02-12

Family

ID=25234484

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7016156A Withdrawn FR2042404A1 (fr) 1969-05-05 1970-05-04

Country Status (5)

Country Link
US (1) US3673589A (fr)
DE (1) DE2023114A1 (fr)
FR (1) FR2042404A1 (fr)
GB (1) GB1313883A (fr)
NL (1) NL7006519A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845476A (en) * 1986-12-17 1989-07-04 Societe D'assistance Technique Aux Industries Electroniques, Pneumatiques, Hydrauliqes Proximity detector between a metallic mass and an element to which is applied an electric voltage

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754219A (en) * 1972-01-03 1973-08-21 Johnson Service Co High impedance gaseous ion sensing and detection system
US3956743A (en) * 1973-03-14 1976-05-11 Theodore D. Geiszler Motion detection system
US3997890A (en) * 1974-06-11 1976-12-14 Kendrick Jr Embry Mayes Alarm system with supervisory system to detect severing or bridging of detection switches
US4155078A (en) * 1976-11-12 1979-05-15 John E. Reilly Single wire intrusion detector system
US4281323A (en) * 1978-12-05 1981-07-28 Bank Computer Network Corporation Noise responsive data input apparatus and method
US4243216A (en) * 1979-06-11 1981-01-06 Ncr Canada Ltd. - Ncr Canada Ltee Double document detection system
SE8700442D0 (sv) * 1987-02-05 1987-02-05 Tore Hesthamar Detektering med hjelp av elektriska felt av forendring i rumslig konfiguration
FR2640052B1 (fr) * 1988-12-02 1991-03-15 Bourgeton Jean Pierre Dispositif pour detecter le passage et le sens de franchissement
FR2693556B1 (fr) * 1992-07-10 1997-11-07 Trong Truc Ngo Procede et dispositif de detection d'une perturbation electrique ionique dans une zone determinee d'un milieu et leur utilisation.
FR2733045B1 (fr) * 1995-04-11 1997-05-23 Ngo Trong Truc Procede et dispositif de mesure d'un parametre d'etat d'une quantite de fluide ionise accumule
WO1998003863A1 (fr) * 1996-07-23 1998-01-29 Trong Truc Ngo Procede et dispositif de mesure d'un parametre d'etat d'une quantite de fluide ionise accumule

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258762A (en) * 1966-06-28 Bistable multivibrator means
US2802178A (en) * 1954-09-22 1957-08-06 Gen Electric Motion detecting device
US3201775A (en) * 1963-03-08 1965-08-17 Teale & Company Voltage proximity detector
US3346856A (en) * 1964-07-06 1967-10-10 Gen Precision Systems Inc Inductive loop vehicle detector
US3564529A (en) * 1965-10-21 1971-02-16 Us Navy Electrostatic field rate detector
US3493954A (en) * 1967-02-01 1970-02-03 Bliss Co Object detection system
US3452346A (en) * 1967-12-29 1969-06-24 Julius B Kupersmit Static charge detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845476A (en) * 1986-12-17 1989-07-04 Societe D'assistance Technique Aux Industries Electroniques, Pneumatiques, Hydrauliqes Proximity detector between a metallic mass and an element to which is applied an electric voltage

Also Published As

Publication number Publication date
US3673589A (en) 1972-06-27
DE2023114A1 (de) 1970-11-12
GB1313883A (en) 1973-04-18
NL7006519A (fr) 1970-11-09

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Legal Events

Date Code Title Description
ST Notification of lapse