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FR661304A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR661304A
FR661304A FR661304DA FR661304A FR 661304 A FR661304 A FR 661304A FR 661304D A FR661304D A FR 661304DA FR 661304 A FR661304 A FR 661304A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR661304A publication Critical patent/FR661304A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR661304D 1927-10-08 1928-09-29 Loud speaker Expired FR661304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL661304X 1927-10-08

Publications (1)

Publication Number Publication Date
FR661304A true FR661304A (en) 1929-07-24

Family

ID=19797682

Family Applications (1)

Application Number Title Priority Date Filing Date
FR661304D Expired FR661304A (en) 1927-10-08 1928-09-29 Loud speaker

Country Status (1)

Country Link
FR (1) FR661304A (en)

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