TREA

with optical sensing means

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Industry

  • CPC
  • H04L15/20
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Parent Industries

HELECTRICITY H04Electric communication H04LTRANSMISSION OF DIGITAL INFORMATION H04L15/00Apparatus or local circuits for transmitting or receiving dot-and-dash codes

Current Industry

H04L15/20with optical sensing means
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2658940
    • Patent number 2,658,940
    • Issue date Nov 10, 1953
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2592779
    • Patent number 2,592,779
    • Issue date Apr 15, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2480386
    • Patent number 2,480,386
    • Issue date Aug 30, 1949
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2307099
    • Patent number 2,307,099
    • Issue date Jan 5, 1943
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2284024
    • Patent number 2,284,024
    • Issue date May 26, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2173164
    • Patent number 2,173,164
    • Issue date Sep 19, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1962467
    • Patent number 1,962,467
    • Issue date Jun 12, 1934
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1939215
    • Patent number 1,939,215
    • Issue date Dec 12, 1933
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1549907
    • Patent number 1,549,907
    • Issue date Aug 18, 1925
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE