IT983689B - Citofono con cornetta scatola d aggancio e interruttore autto matico del circuito fonico - Google Patents

Citofono con cornetta scatola d aggancio e interruttore autto matico del circuito fonico

Info

Publication number
IT983689B
IT983689B IT2268573A IT2268573A IT983689B IT 983689 B IT983689 B IT 983689B IT 2268573 A IT2268573 A IT 2268573A IT 2268573 A IT2268573 A IT 2268573A IT 983689 B IT983689 B IT 983689B
Authority
IT
Italy
Prior art keywords
intercom
handset
circuit switch
phone circuit
hooking box
Prior art date
Application number
IT2268573A
Other languages
English (en)
Original Assignee
Carava C
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 Carava C filed Critical Carava C
Priority to IT2268573A priority Critical patent/IT983689B/it
Priority to FR7410868A priority patent/FR2224947A1/fr
Application granted granted Critical
Publication of IT983689B publication Critical patent/IT983689B/it

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
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • 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
    • H04M1/0291—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
IT2268573A 1973-04-06 1973-04-06 Citofono con cornetta scatola d aggancio e interruttore autto matico del circuito fonico IT983689B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT2268573A IT983689B (it) 1973-04-06 1973-04-06 Citofono con cornetta scatola d aggancio e interruttore autto matico del circuito fonico
FR7410868A FR2224947A1 (en) 1973-04-06 1974-03-28 House telephone support and switch - magnets interrupt microphone and receiver circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2268573A IT983689B (it) 1973-04-06 1973-04-06 Citofono con cornetta scatola d aggancio e interruttore autto matico del circuito fonico

Publications (1)

Publication Number Publication Date
IT983689B true IT983689B (it) 1974-11-11

Family

ID=11199240

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2268573A IT983689B (it) 1973-04-06 1973-04-06 Citofono con cornetta scatola d aggancio e interruttore autto matico del circuito fonico

Country Status (2)

Country Link
FR (1) FR2224947A1 (it)
IT (1) IT983689B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8435049U1 (de) * 1984-11-29 1986-05-22 Siemens AG, 1000 Berlin und 8000 München Auflage für den Bedienhörer eines Autotelefons
CN103905930A (zh) * 2014-03-27 2014-07-02 胡启宽 一种不易碰落听筒的壁挂式对讲室内分机

Also Published As

Publication number Publication date
FR2224947B1 (it) 1977-10-07
FR2224947A1 (en) 1974-10-31

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