SE7803760L - Dorrcentral for ringledningsanleggning - Google Patents

Dorrcentral for ringledningsanleggning

Info

Publication number
SE7803760L
SE7803760L SE7803760A SE7803760A SE7803760L SE 7803760 L SE7803760 L SE 7803760L SE 7803760 A SE7803760 A SE 7803760A SE 7803760 A SE7803760 A SE 7803760A SE 7803760 L SE7803760 L SE 7803760L
Authority
SE
Sweden
Prior art keywords
door center
ring pipeline
pipeline
ring
door
Prior art date
Application number
SE7803760A
Other languages
English (en)
Inventor
M Heppner
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 SE7803760L publication Critical patent/SE7803760L/sv

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)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Switch Cases, Indication, And Locking (AREA)
SE7803760A 1977-04-21 1978-04-04 Dorrcentral for ringledningsanleggning SE7803760L (sv)

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 (1)

Publication Number Publication Date
SE7803760L true SE7803760L (sv) 1978-10-22

Family

ID=6006867

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7803760A SE7803760L (sv) 1977-04-21 1978-04-04 Dorrcentral for ringledningsanleggning

Country Status (3)

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

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
PT2456604T (pt) * 2009-07-24 2017-02-15 La Prec Officine Mecc Snc Grelha de altifalante de duas cores ou multicolorida para veículos

Also Published As

Publication number Publication date
IT7804824A0 (it) 1978-04-19
DE2717644A1 (de) 1978-10-26
IT1102928B (it) 1985-10-14

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