FR697616A - Improvements made to call meter circuits or the like for telephone installations - Google Patents

Improvements made to call meter circuits or the like for telephone installations

Info

Publication number
FR697616A
FR697616A FR697616DA FR697616A FR 697616 A FR697616 A FR 697616A FR 697616D A FR697616D A FR 697616DA FR 697616 A FR697616 A FR 697616A
Authority
FR
France
Prior art keywords
improvements made
telephone installations
call meter
meter circuits
circuits
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
Other languages
French (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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR697616A publication Critical patent/FR697616A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
    • F16K5/0257—Packings
    • F16K5/0271—Packings between housing and plug
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
FR697616D 1929-06-21 1930-06-18 Improvements made to call meter circuits or the like for telephone installations Expired FR697616A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE357620X 1929-06-21

Publications (1)

Publication Number Publication Date
FR697616A true FR697616A (en) 1931-01-20

Family

ID=20308835

Family Applications (1)

Application Number Title Priority Date Filing Date
FR697616D Expired FR697616A (en) 1929-06-21 1930-06-18 Improvements made to call meter circuits or the like for telephone installations

Country Status (5)

Country Link
US (1) US1833586A (en)
BE (1) BE371304A (en)
DE (1) DE606072C (en)
FR (1) FR697616A (en)
GB (1) GB357620A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969460C (en) * 1954-04-08 1958-06-04 Friedrich Merk Telefonbau Ag Circuit arrangement for the control of superimposed circuits in small telephone exchange systems

Also Published As

Publication number Publication date
BE371304A (en)
GB357620A (en) 1931-09-18
US1833586A (en) 1931-11-24
DE606072C (en) 1934-11-24

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