FR670618A - Organes vibrants particulièrement destinés aux microphones, hauts parleurs et autres dispositifs analogues - Google Patents

Organes vibrants particulièrement destinés aux microphones, hauts parleurs et autres dispositifs analogues

Info

Publication number
FR670618A
FR670618A FR670618DA FR670618A FR 670618 A FR670618 A FR 670618A FR 670618D A FR670618D A FR 670618DA FR 670618 A FR670618 A FR 670618A
Authority
FR
France
Prior art keywords
loudspeakers
microphones
similar devices
particularly intended
vibrating parts
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
English (en)
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co 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 Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Application granted granted Critical
Publication of FR670618A publication Critical patent/FR670618A/fr
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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR670618D 1928-03-08 1929-02-28 Organes vibrants particulièrement destinés aux microphones, hauts parleurs et autres dispositifs analogues Expired FR670618A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB727528A GB308449A (en) 1928-03-08 1928-03-08 Improvements relating to telephone instruments

Publications (1)

Publication Number Publication Date
FR670618A true FR670618A (fr) 1929-12-02

Family

ID=9829965

Family Applications (1)

Application Number Title Priority Date Filing Date
FR670618D Expired FR670618A (fr) 1928-03-08 1929-02-28 Organes vibrants particulièrement destinés aux microphones, hauts parleurs et autres dispositifs analogues

Country Status (3)

Country Link
BE (1) BE358487A (enrdf_load_stackoverflow)
FR (1) FR670618A (enrdf_load_stackoverflow)
GB (1) GB308449A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE358487A (enrdf_load_stackoverflow)
GB308449A (en) 1929-03-28

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