NL30220C - - Google Patents

Info

Publication number
NL30220C
NL30220C NL30220DA NL30220C NL 30220 C NL30220 C NL 30220C NL 30220D A NL30220D A NL 30220DA NL 30220 C NL30220 C NL 30220C
Authority
NL
Netherlands
Application number
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.)
Publication of NL30220C publication Critical patent/NL30220C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/007—Telephonic communication systems specially adapted for combination with other electrical systems with remote control systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Alarm Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
NL30220D 1928-12-15 NL30220C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES88951D DE659819C (de) 1928-12-15 1928-12-15 Schaltungsanordnung fuer Alarmanlagen

Publications (1)

Publication Number Publication Date
NL30220C true NL30220C (en:Method)

Family

ID=7514778

Family Applications (1)

Application Number Title Priority Date Filing Date
NL30220D NL30220C (en:Method) 1928-12-15

Country Status (4)

Country Link
CH (1) CH146137A (en:Method)
DE (1) DE659819C (en:Method)
FR (1) FR686538A (en:Method)
NL (1) NL30220C (en:Method)

Also Published As

Publication number Publication date
CH146137A (de) 1931-03-31
DE659819C (de) 1938-05-11
FR686538A (fr) 1930-07-28

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