AU7494374A - Ground or water telecommunication - Google Patents

Ground or water telecommunication

Info

Publication number
AU7494374A
AU7494374A AU74943/74A AU7494374A AU7494374A AU 7494374 A AU7494374 A AU 7494374A AU 74943/74 A AU74943/74 A AU 74943/74A AU 7494374 A AU7494374 A AU 7494374A AU 7494374 A AU7494374 A AU 7494374A
Authority
AU
Australia
Prior art keywords
ground
telecommunication
water
water telecommunication
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
AU74943/74A
Inventor
Eric Joseph Sumray
Nicholas Alexander Justice
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.)
Babcock Partner No 6 Ltd
Original Assignee
Hawker Siddeley Dynamics Engineering 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 Hawker Siddeley Dynamics Engineering Ltd filed Critical Hawker Siddeley Dynamics Engineering Ltd
Publication of AU7494374A publication Critical patent/AU7494374A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/061—Indicating or recording devices for remote indication
    • G01F15/063—Indicating or recording devices for remote indication using electrical means

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Control Of Fluid Pressure (AREA)
  • Geophysics And Detection Of Objects (AREA)
AU74943/74A 1973-10-31 1974-10-31 Ground or water telecommunication Expired AU7494374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5062673A GB1491443A (en) 1973-10-31 1973-10-31 Telecommunication through the ground for control of material in pipe networks

Publications (1)

Publication Number Publication Date
AU7494374A true AU7494374A (en) 1976-05-06

Family

ID=10456677

Family Applications (1)

Application Number Title Priority Date Filing Date
AU74943/74A Expired AU7494374A (en) 1973-10-31 1974-10-31 Ground or water telecommunication

Country Status (5)

Country Link
AU (1) AU7494374A (en)
DE (1) DE2451961A1 (en)
FR (1) FR2250241A1 (en)
GB (1) GB1491443A (en)
NL (1) NL7414183A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246441B (en) * 1990-04-17 1994-08-10 Dunlop Ltd Outfall monitoring
DE102007034699A1 (en) * 2007-07-16 2009-01-22 Deutsches Zentrum für Luft- und Raumfahrt e.V. Measuring device and method for determining the electrical potential and / or the current density at an electrode

Also Published As

Publication number Publication date
FR2250241A1 (en) 1975-05-30
DE2451961A1 (en) 1975-05-07
NL7414183A (en) 1975-05-02
GB1491443A (en) 1977-11-09

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