BE773884A - Dispositif d'appel acoustique pour postes telephoniques - Google Patents

Dispositif d'appel acoustique pour postes telephoniques

Info

Publication number
BE773884A
BE773884A BE773884A BE773884A BE773884A BE 773884 A BE773884 A BE 773884A BE 773884 A BE773884 A BE 773884A BE 773884 A BE773884 A BE 773884A BE 773884 A BE773884 A BE 773884A
Authority
BE
Belgium
Prior art keywords
call device
telephone stations
acoustic call
acoustic
stations
Prior art date
Application number
BE773884A
Other languages
English (en)
French (fr)
Original Assignee
Krone Gmbh
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 DE19702062321 external-priority patent/DE2062321C/de
Application filed by Krone Gmbh filed Critical Krone Gmbh
Publication of BE773884A publication Critical patent/BE773884A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • G10K9/20—Sounding members

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
BE773884A 1970-12-17 1971-10-13 Dispositif d'appel acoustique pour postes telephoniques BE773884A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702062321 DE2062321C (de) 1970-12-17 Ruftongeber fur Fernsprechapparate

Publications (1)

Publication Number Publication Date
BE773884A true BE773884A (fr) 1972-01-31

Family

ID=5791353

Family Applications (1)

Application Number Title Priority Date Filing Date
BE773884A BE773884A (fr) 1970-12-17 1971-10-13 Dispositif d'appel acoustique pour postes telephoniques

Country Status (4)

Country Link
AT (1) AT322640B (xx)
BE (1) BE773884A (xx)
CH (1) CH536587A (xx)
NL (1) NL7114134A (xx)

Also Published As

Publication number Publication date
NL7114134A (xx) 1972-06-20
AT322640B (de) 1975-05-26
DE2062321A1 (de) 1972-06-29
CH536587A (de) 1973-04-30
DE2062321B2 (de) 1972-11-02

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