FR932825A - Improvements to electro-dynamic loudspeakers - Google Patents

Improvements to electro-dynamic loudspeakers

Info

Publication number
FR932825A
FR932825A FR932825DA FR932825A FR 932825 A FR932825 A FR 932825A FR 932825D A FR932825D A FR 932825DA FR 932825 A FR932825 A FR 932825A
Authority
FR
France
Prior art keywords
electro
dynamic loudspeakers
loudspeakers
dynamic
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
Pierre August Joseph Visschers
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR932825A publication Critical patent/FR932825A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR932825D 1939-03-28 1946-08-27 Improvements to electro-dynamic loudspeakers Expired FR932825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB932825X 1939-03-28

Publications (1)

Publication Number Publication Date
FR932825A true FR932825A (en) 1948-04-02

Family

ID=10747422

Family Applications (1)

Application Number Title Priority Date Filing Date
FR932825D Expired FR932825A (en) 1939-03-28 1946-08-27 Improvements to electro-dynamic loudspeakers

Country Status (1)

Country Link
FR (1) FR932825A (en)

Similar Documents

Publication Publication Date Title
FR880734A (en) Telephone headsets
FR860167A (en) Improvements to cameras
FR867282A (en) Improvements to amplifiers
FR865593A (en) Electro-acoustic transducers
FR862867A (en) Loud speaker
FR846487A (en) Improvements to talking machines
FR874909A (en) Improvements to vibrating devices
FR946860A (en) Improvements to phonograph pick-ups
FR827276A (en) Improvements to electrodynamic loudspeakers
FR932825A (en) Improvements to electro-dynamic loudspeakers
FR865662A (en) Brake improvements
FR867759A (en) Brake improvements
FR825005A (en) Improvements to electrodynamic loudspeakers
FR864832A (en) Brake improvements
FR866527A (en) Brake improvements
FR863033A (en) Improvements to filters
FR818761A (en) Improvements to electrodynamic loudspeakers
FR868717A (en) Anti-swirl speaker
FR848588A (en) Improvements to speaker membranes
FR863774A (en) Improvements to constructions
FR859040A (en) Improvements to alkaline batteries
FR867527A (en) Improvements to cameras
FR864610A (en) Improvements made to antenna frames
FR867383A (en) Brake improvements
FR50198E (en) Improvements to telephone devices