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FR765856A - Improvements in microphones and receivers - Google Patents

Improvements in microphones and receivers

Info

Publication number
FR765856A
FR765856A FR765856DA FR765856A FR 765856 A FR765856 A FR 765856A FR 765856D A FR765856D A FR 765856DA FR 765856 A FR765856 A FR 765856A
Authority
FR
France
Prior art keywords
microphones
receivers
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and 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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Application granted granted Critical
Publication of FR765856A publication Critical patent/FR765856A/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Road Signs Or Road Markings (AREA)
  • Building Environments (AREA)
  • Prevention Of Electric Corrosion (AREA)
FR765856D 1932-12-30 1933-12-20 Improvements in microphones and receivers Expired FR765856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3689832A GB411566A (en) 1932-12-30 1932-12-30 Improvements relating to microphones and receivers

Publications (1)

Publication Number Publication Date
FR765856A true FR765856A (en) 1934-06-18

Family

ID=10392049

Family Applications (1)

Application Number Title Priority Date Filing Date
FR765856D Expired FR765856A (en) 1932-12-30 1933-12-20 Improvements in microphones and receivers

Country Status (3)

Country Link
BE (1) BE400294A (en)
FR (1) FR765856A (en)
GB (1) GB411566A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976947C (en) * 1952-06-25 1964-09-17 Standard Elek K Lorenz Ag Resilient clamping of the membrane of a speech or ear capsule

Also Published As

Publication number Publication date
BE400294A (en)
GB411566A (en) 1934-06-14

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