CH215787A - Fernhörer. - Google Patents

Fernhörer.

Info

Publication number
CH215787A
CH215787A CH215787DA CH215787A CH 215787 A CH215787 A CH 215787A CH 215787D A CH215787D A CH 215787DA CH 215787 A CH215787 A CH 215787A
Authority
CH
Switzerland
Prior art keywords
remote listeners
listeners
remote
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH215787A publication Critical patent/CH215787A/de

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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
CH215787D 1936-08-01 1937-07-29 Fernhörer. CH215787A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US215787XA 1936-08-01 1936-08-01

Publications (1)

Publication Number Publication Date
CH215787A true CH215787A (de) 1941-07-15

Family

ID=21805020

Family Applications (1)

Application Number Title Priority Date Filing Date
CH215787D CH215787A (de) 1936-08-01 1937-07-29 Fernhörer.

Country Status (4)

Country Link
BE (1) BE422587A (fr)
CH (1) CH215787A (fr)
FR (1) FR824971A (fr)
GB (1) GB481351A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE854670C (de) * 1948-10-02 1952-11-06 Electroacustic Ges M B H Daempfungseinrichtung von Telephonen und Mikrophonen
DE947083C (de) * 1952-10-01 1956-08-09 Standard Elek K Ag Elektromagnetisches Schallgeraet in Kapselform
NL8501650A (nl) * 1985-06-07 1987-01-02 Philips Nv Elektrodynamische omzetter met een tweedelig membraan.
NL8602451A (nl) * 1986-09-29 1988-04-18 Philips Nv Luidspreker met een tweedelig membraan voor toepassing als autoluidspreker.

Also Published As

Publication number Publication date
BE422587A (fr)
FR824971A (fr) 1938-02-21
GB481351A (en) 1938-03-09

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