FR647859A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR647859A
FR647859A FR647859DA FR647859A FR 647859 A FR647859 A FR 647859A FR 647859D A FR647859D A FR 647859DA FR 647859 A FR647859 A FR 647859A
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.)
WIRELESS MUSIC Ltd
Original Assignee
WIRELESS MUSIC 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 WIRELESS MUSIC Ltd filed Critical WIRELESS MUSIC Ltd
Application granted granted Critical
Publication of FR647859A publication Critical patent/FR647859A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR647859D 1927-01-11 1928-01-09 Loud speaker Expired FR647859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB647859X 1927-01-11

Publications (1)

Publication Number Publication Date
FR647859A true FR647859A (en) 1928-12-03

Family

ID=10489917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR647859D Expired FR647859A (en) 1927-01-11 1928-01-09 Loud speaker

Country Status (1)

Country Link
FR (1) FR647859A (en)

Similar Documents

Publication Publication Date Title
FR616738A (en) Loud speaker
FR32220E (en) Loud speaker
FR634878A (en) Loud speaker
FR620326A (en) Loud speaker
FR646683A (en) Loud speaker
FR647859A (en) Loud speaker
FR653063A (en) Loud speaker
FR656499A (en) Loud speaker
FR646685A (en) Loud speaker
FR661304A (en) Loud speaker
FR617464A (en) Loud speaker
FR616598A (en) Loud speaker
FR606696A (en) Loud speaker
FR32665E (en) Loud speaker
FR616419A (en) Loud speaker
FR646684A (en) Sound reproduction
FR658425A (en) Advanced microphone
FR628689A (en) Loudspeaker enhancements
FR36327E (en) Loudspeaker enhancements
FR621997A (en) Loud speaker
FR638086A (en) Loud speaker
FR611814A (en) Loud speaker
FR632295A (en) Loud speaker
FR623891A (en) Loud speaker
FR631211A (en) Loud speaker