FR841140A - Portable speakerphone system - Google Patents

Portable speakerphone system

Info

Publication number
FR841140A
FR841140A FR841140DA FR841140A FR 841140 A FR841140 A FR 841140A FR 841140D A FR841140D A FR 841140DA FR 841140 A FR841140 A FR 841140A
Authority
FR
France
Prior art keywords
speakerphone system
portable
portable speakerphone
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)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR841140A publication Critical patent/FR841140A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H04R27/04—Electric megaphones
FR841140D 1938-01-14 1938-01-14 Portable speakerphone system Expired FR841140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR841140T 1938-01-14

Publications (1)

Publication Number Publication Date
FR841140A true FR841140A (en) 1939-05-10

Family

ID=9306250

Family Applications (1)

Application Number Title Priority Date Filing Date
FR841140D Expired FR841140A (en) 1938-01-14 1938-01-14 Portable speakerphone system

Country Status (1)

Country Link
FR (1) FR841140A (en)

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