BE773884A - ACOUSTIC CALL DEVICE FOR TELEPHONE STATIONS - Google Patents

ACOUSTIC CALL DEVICE FOR TELEPHONE STATIONS

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
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/en
Application filed by Krone Gmbh filed Critical Krone Gmbh
Publication of BE773884A publication Critical patent/BE773884A/en

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)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Telephone Set Structure (AREA)
BE773884A 1970-12-17 1971-10-13 ACOUSTIC CALL DEVICE FOR TELEPHONE STATIONS BE773884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702062321 DE2062321C (en) 1970-12-17 Ringer for telephone sets

Publications (1)

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

Family

ID=5791353

Family Applications (1)

Application Number Title Priority Date Filing Date
BE773884A BE773884A (en) 1970-12-17 1971-10-13 ACOUSTIC CALL DEVICE FOR TELEPHONE STATIONS

Country Status (4)

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

Also Published As

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

Similar Documents

Publication Publication Date Title
FR1461925A (en) Telephone call waiting device
BE759380A (en) TELEPHONE CALL SIMULATOR
BE768514A (en) MOBILE SWITCHING DEVICE
CH519278A (en) Controller of a telephone call sign
FR1206753A (en) Telephone call device
BE788119A (en) CALLING DEVICE FOR COMMUNICATION SWITCHING SYSTEM
BE784382A (en) TELEPHONE SUBSCRIBER CIRCUIT
CA907188A (en) Electronic telephone call restricting device
FR1376697A (en) telephone call transmitter
IT944168B (en) AMPLIFIER DEVICE FOR APPA TELEPHONE RECEIPT
BE773884A (en) ACOUSTIC CALL DEVICE FOR TELEPHONE STATIONS
FR1396950A (en) Device for automatically dialing a telephone number
BE762095A (en) SEALING DEVICE FOR MOBILE SHAFTS
AT315251B (en) Telephone handset
FR1487773A (en) Call tone generator for telephone sets
FR1386318A (en) Luminous person call device
SE399170B (en) DEVICE FOR CHARGING TELEPHONE CALLS
IT947304B (en) CALL DEVICE FOR PHONE PHONE TOY
BE776673A (en) ELECTRONIC RINGING FOR TELEPHONE STATIONS
BE807247A (en) CALL NUMBER SELECTION DEVICE FOR TELEPHONE DEVICES
NL169666C (en) DEVICE FOR AUTOMATICALLY ANSWERING TELEPHONE CALLS.
FR1429909A (en) Call dial for telephone sets
BE814686A (en) MOUNT FOR TELEPHONE CALLING DEVICES
CH545049A (en) Telephone call answering device
FR1439666A (en) Automatic telephone call apparatus