FR1005731A - Improvements to two-sided speakerphone systems - Google Patents

Improvements to two-sided speakerphone systems

Info

Publication number
FR1005731A
FR1005731A FR1005731DA FR1005731A FR 1005731 A FR1005731 A FR 1005731A FR 1005731D A FR1005731D A FR 1005731DA FR 1005731 A FR1005731 A FR 1005731A
Authority
FR
France
Prior art keywords
sided
speakerphone systems
speakerphone
systems
sided speakerphone
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)
Inventor
Jacques Levy
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 filed Critical
Application granted granted Critical
Publication of FR1005731A publication Critical patent/FR1005731A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/62—Constructional arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR1005731D 1947-09-13 1947-09-13 Improvements to two-sided speakerphone systems Expired FR1005731A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1005731T 1947-09-13

Publications (1)

Publication Number Publication Date
FR1005731A true FR1005731A (en) 1952-04-15

Family

ID=9565074

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1005731D Expired FR1005731A (en) 1947-09-13 1947-09-13 Improvements to two-sided speakerphone systems

Country Status (1)

Country Link
FR (1) FR1005731A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102605A (en) * 1960-07-05 1963-09-03 Magnavox Co Sound reproducing system
US3132712A (en) * 1960-01-04 1964-05-12 Wilbur L Maddy Loud-speaker enclosure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132712A (en) * 1960-01-04 1964-05-12 Wilbur L Maddy Loud-speaker enclosure
US3102605A (en) * 1960-07-05 1963-09-03 Magnavox Co Sound reproducing system

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