2480386

Information

• Patent Grant
• 2480386

• References
• Source

• Patent Number

  2,480,386

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1949
  75 years ago

• CPC

  • H04L15/20 - with optical sensing means

• US Classifications

  • 178 - Telegraphy
  • 250 - Radiant energy