Numeral singnal cables for railway

Numeral singnal cables for railway

  • CN 2,456,271 Y
  • Filed: 12/31/2000
  • Issued: 10/24/2001
  • Est. Priority Date: 12/31/2000
  • Status: Active Grant
First Claim
Patent Images

1. a railway digital signal cable is made of external protection and insulated wire line group, and it is characterized in that:

  • the insulating barrier of described insulated wire is a three-decker, and ecto-entad is followed successively by;

    exodermis (1), middle foaming layer (2) and endodermis (3).

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