NL32155C - - Google Patents

Info

Publication number
NL32155C
NL32155C NL32155DA NL32155C NL 32155 C NL32155 C NL 32155C NL 32155D A NL32155D A NL 32155DA NL 32155 C NL32155 C NL 32155C
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 NL32155C publication Critical patent/NL32155C/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M5/00Manual exchanges
    • H04M5/04Arrangements for indicating calls or supervising connections for calling or clearing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/32Reducing cross-talk, e.g. by compensating
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/68Circuit arrangements for preventing eavesdropping

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NL32155D 1929-08-22 NL32155C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE538837T 1929-08-22

Publications (1)

Publication Number Publication Date
NL32155C true NL32155C (xx)

Family

ID=34122368

Family Applications (1)

Application Number Title Priority Date Filing Date
NL32155D NL32155C (xx) 1929-08-22

Country Status (4)

Country Link
DE (2) DE538837C (xx)
FR (1) FR703983A (xx)
GB (1) GB362478A (xx)
NL (1) NL32155C (xx)

Also Published As

Publication number Publication date
DE538837C (de) 1931-11-19
GB362478A (en) 1931-12-07
DE604196C (de) 1934-10-19
FR703983A (fr) 1931-05-08

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