FR978646A - Système téléphonique d'intercommunication - Google Patents

Système téléphonique d'intercommunication

Info

Publication number
FR978646A
FR978646A FR978646DA FR978646A FR 978646 A FR978646 A FR 978646A FR 978646D A FR978646D A FR 978646DA FR 978646 A FR978646 A FR 978646A
Authority
FR
France
Prior art keywords
intercom system
telephone intercom
telephone
intercom
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
English (en)
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.)
TWO WAY TALKIE Ltd
Original Assignee
TWO WAY TALKIE 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 TWO WAY TALKIE Ltd filed Critical TWO WAY TALKIE Ltd
Application granted granted Critical
Publication of FR978646A publication Critical patent/FR978646A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR978646D 1947-03-03 1949-11-03 Système téléphonique d'intercommunication Expired FR978646A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB605547A GB632216A (en) 1947-03-03 1947-03-03 Improvements in or relating to intercommunication telephone apparatus

Publications (1)

Publication Number Publication Date
FR978646A true FR978646A (fr) 1951-04-16

Family

ID=9807588

Family Applications (1)

Application Number Title Priority Date Filing Date
FR978646D Expired FR978646A (fr) 1947-03-03 1949-11-03 Système téléphonique d'intercommunication

Country Status (2)

Country Link
FR (1) FR978646A (fr)
GB (1) GB632216A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264410A (en) * 1962-11-01 1966-08-02 Marketing Co Ordination Standa Sound simulating and reproducing system

Also Published As

Publication number Publication date
GB632216A (en) 1949-11-18

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