DE432939C - - Google Patents

Info

Publication number
DE432939C
DE432939C DENDAT432939D DE432939DA DE432939C DE 432939 C DE432939 C DE 432939C DE NDAT432939 D DENDAT432939 D DE NDAT432939D DE 432939D A DE432939D A DE 432939DA DE 432939 C DE432939 C DE 432939C
Authority
DE
Germany
Prior art keywords
earpiece
hollow rubber
membrane
telephone
threaded ring
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.)
Active
Application number
DENDAT432939D
Other languages
German (de)
English (en)
Publication of DE432939C publication Critical patent/DE432939C/de
Active 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
DENDAT432939D Active DE432939C (cg-RX-API-DMAC10.html)

Publications (1)

Publication Number Publication Date
DE432939C true DE432939C (cg-RX-API-DMAC10.html)

Family

ID=575054

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT432939D Active DE432939C (cg-RX-API-DMAC10.html)

Country Status (1)

Country Link
DE (1) DE432939C (cg-RX-API-DMAC10.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3030458A (en) * 1958-10-17 1962-04-17 Electric Storage Battery Co Detachable liner for headsets
DE1267787B (de) * 1954-05-20 1968-05-09 Nat Res Council Laermschutzvorrichtung nach Art von Ohrenschuetzern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267787B (de) * 1954-05-20 1968-05-09 Nat Res Council Laermschutzvorrichtung nach Art von Ohrenschuetzern
US3030458A (en) * 1958-10-17 1962-04-17 Electric Storage Battery Co Detachable liner for headsets

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