2678431

Information

• Patent Grant
• 2678431

• References
• Source

• Patent Number

  2,678,431

• Date Filed

  Not available

• Date Issued

  Tuesday, May 11, 1954
  70 years ago

• CPC

  • H02B15/02 - with mimic diagrams
  • Y10S385/901 - Illuminating or display apparatus

• US Classifications

  • 340 - Communications: electrical
  • 040 - Card, picture, or sign exhibiting
  • 385 - Optical waveguides