FR2019219A1 - - Google Patents

Info

Publication number
FR2019219A1
FR2019219A1 FR6933265A FR6933265A FR2019219A1 FR 2019219 A1 FR2019219 A1 FR 2019219A1 FR 6933265 A FR6933265 A FR 6933265A FR 6933265 A FR6933265 A FR 6933265A FR 2019219 A1 FR2019219 A1 FR 2019219A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6933265A
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
Priority claimed from NL6813994A external-priority patent/NL6813994A/xx
Priority claimed from NL6913897A external-priority patent/NL6913897A/xx
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2019219A1 publication Critical patent/FR2019219A1/fr
Withdrawn legal-status Critical Current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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
FR6933265A 1968-09-30 1969-09-30 Withdrawn FR2019219A1 (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6813994A NL6813994A (enrdf_load_stackoverflow) 1968-09-30 1968-09-30
NL6913897A NL6913897A (enrdf_load_stackoverflow) 1969-09-12 1969-09-12

Publications (1)

Publication Number Publication Date
FR2019219A1 true FR2019219A1 (enrdf_load_stackoverflow) 1970-06-26

Family

ID=26644359

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6933265A Withdrawn FR2019219A1 (enrdf_load_stackoverflow) 1968-09-30 1969-09-30

Country Status (3)

Country Link
DE (1) DE1948933A1 (enrdf_load_stackoverflow)
FR (1) FR2019219A1 (enrdf_load_stackoverflow)
GB (1) GB1226077A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000801A1 (en) * 1986-06-19 1989-01-26 Reinhardt Fischer Electro-acoustical transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000801A1 (en) * 1986-06-19 1989-01-26 Reinhardt Fischer Electro-acoustical transducer

Also Published As

Publication number Publication date
DE1948933A1 (de) 1970-04-23
GB1226077A (enrdf_load_stackoverflow) 1971-03-24

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Legal Events

Date Code Title Description
ST Notification of lapse