NL40819C - - Google Patents

Info

Publication number
NL40819C
NL40819C NL40819DA NL40819C NL 40819 C NL40819 C NL 40819C NL 40819D A NL40819D A NL 40819DA NL 40819 C NL40819 C NL 40819C
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 NL40819C publication Critical patent/NL40819C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Alarm Systems (AREA)
NL40819D 1930-12-09 NL40819C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE620251T 1930-12-09

Publications (1)

Publication Number Publication Date
NL40819C true NL40819C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=34812903

Family Applications (2)

Application Number Title Priority Date Filing Date
NL39531D NL39531C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1930-12-09
NL40819D NL40819C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1930-12-09

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL39531D NL39531C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1930-12-09

Country Status (3)

Country Link
DE (1) DE620251C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (2) FR727923A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (2) NL40819C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
DE620251C (de) 1935-10-17
NL39531C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR42678E (fr) 1933-09-01
FR727923A (fr) 1932-06-27

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