BE443424A - - Google Patents

Info

Publication number
BE443424A
BE443424A BE443424DA BE443424A BE 443424 A BE443424 A BE 443424A BE 443424D A BE443424D A BE 443424DA BE 443424 A BE443424 A BE 443424A
Authority
BE
Belgium
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 BE443424A publication Critical patent/BE443424A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
BE443424D 1940-12-03 BE443424A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE221467X 1940-12-03

Publications (1)

Publication Number Publication Date
BE443424A true BE443424A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=5840168

Family Applications (1)

Application Number Title Priority Date Filing Date
BE443424D BE443424A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1940-12-03

Country Status (2)

Country Link
BE (1) BE443424A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH221467A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
CH221467A (de) 1942-05-31

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