FR789233A - Coupling device for intercommunications - Google Patents

Coupling device for intercommunications

Info

Publication number
FR789233A
FR789233A FR789233DA FR789233A FR 789233 A FR789233 A FR 789233A FR 789233D A FR789233D A FR 789233DA FR 789233 A FR789233 A FR 789233A
Authority
FR
France
Prior art keywords
intercommunications
coupling device
coupling
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of FR789233A publication Critical patent/FR789233A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/903—Transmit-receive circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Selective Calling Equipment (AREA)
FR789233D 1934-04-25 1935-04-24 Coupling device for intercommunications Expired FR789233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE442986X 1934-04-25

Publications (1)

Publication Number Publication Date
FR789233A true FR789233A (en) 1935-10-25

Family

ID=6526342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789233D Expired FR789233A (en) 1934-04-25 1935-04-24 Coupling device for intercommunications

Country Status (3)

Country Link
US (1) US2144936A (en)
FR (1) FR789233A (en)
GB (1) GB442986A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537972A (en) * 1944-08-11 1951-01-16 Collins Radio Co Radio communication transmitting and receiving combination
US2459281A (en) * 1945-01-08 1949-01-18 Rca Corp Two-way radio equipment for lifeboat service
US2521860A (en) * 1948-03-30 1950-09-12 Union Switch & Signal Co Emergency break-in system for communication systems
US2766324A (en) * 1951-12-18 1956-10-09 Motorola Inc Switching system
US3181116A (en) * 1961-12-11 1965-04-27 William F Gordon Underwater telephone system
US3218607A (en) * 1962-12-10 1965-11-16 Bendix Corp Underwater telephone

Also Published As

Publication number Publication date
GB442986A (en) 1936-02-19
US2144936A (en) 1939-01-24

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