IT7804824A0 - Stazione di portone per un impianto di campanelli. - Google Patents

Stazione di portone per un impianto di campanelli.

Info

Publication number
IT7804824A0
IT7804824A0 IT7804824A IT482478A IT7804824A0 IT 7804824 A0 IT7804824 A0 IT 7804824A0 IT 7804824 A IT7804824 A IT 7804824A IT 482478 A IT482478 A IT 482478A IT 7804824 A0 IT7804824 A0 IT 7804824A0
Authority
IT
Italy
Prior art keywords
bell system
door station
door
station
bell
Prior art date
Application number
IT7804824A
Other languages
English (en)
Other versions
IT1102928B (it
Inventor
Happner Manfred
Original Assignee
Loh Kg Ritto Werk
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 Loh Kg Ritto Werk filed Critical Loh Kg Ritto Werk
Publication of IT7804824A0 publication Critical patent/IT7804824A0/it
Application granted granted Critical
Publication of IT1102928B publication Critical patent/IT1102928B/it

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Switch Cases, Indication, And Locking (AREA)
IT04824/78A 1977-04-21 1978-04-19 Stazione di portone per un inpianto di campanelli IT1102928B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772717644 DE2717644A1 (de) 1977-04-21 1977-04-21 Tuerstation fuer eine klingelanlage

Publications (2)

Publication Number Publication Date
IT7804824A0 true IT7804824A0 (it) 1978-04-19
IT1102928B IT1102928B (it) 1985-10-14

Family

ID=6006867

Family Applications (1)

Application Number Title Priority Date Filing Date
IT04824/78A IT1102928B (it) 1977-04-21 1978-04-19 Stazione di portone per un inpianto di campanelli

Country Status (3)

Country Link
DE (1) DE2717644A1 (it)
IT (1) IT1102928B (it)
SE (1) SE7803760L (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647243B1 (fr) * 1989-05-18 1991-08-23 Eurobat Dispositif de protection pour un interphone
ES2614945T3 (es) * 2009-07-24 2017-06-02 Fb Technology S.R.L. Rejilla para altavoz iluminada de dos colores o multicolor para vehículos

Also Published As

Publication number Publication date
SE7803760L (sv) 1978-10-22
IT1102928B (it) 1985-10-14
DE2717644A1 (de) 1978-10-26

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