FR419805A - Membranes for phones - Google Patents

Membranes for phones

Info

Publication number
FR419805A
FR419805A FR419805A FR419805DA FR419805A FR 419805 A FR419805 A FR 419805A FR 419805 A FR419805 A FR 419805A FR 419805D A FR419805D A FR 419805DA FR 419805 A FR419805 A FR 419805A
Authority
FR
France
Prior art keywords
membranes
phones
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
FR419805A
Other languages
French (fr)
Inventor
Clemens Baehr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR419805A publication Critical patent/FR419805A/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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR419805A 1910-03-23 1910-08-27 Membranes for phones Expired FR419805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE419805X 1910-03-23

Publications (1)

Publication Number Publication Date
FR419805A true FR419805A (en) 1911-01-16

Family

ID=32479021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR419805A Expired FR419805A (en) 1910-03-23 1910-08-27 Membranes for phones

Country Status (2)

Country Link
FR (1) FR419805A (en)
GB (1) GB191021328A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965878A (en) * 1956-03-06 1960-12-20 Svenska Aeroplan Ab Ballistic missile shock wave detector

Also Published As

Publication number Publication date
GB191021328A (en) 1910-11-03

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