3842894

Information

• Patent Grant
• 3842894

• References
• Source

• Patent Number

  3,842,894

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • G01F23/292 - Light
  • B22D11/204 - by using optical means

• US Classifications

  • 164 - Metal founding
  • 200 - Electricity: circuit makers and breakers
  • 250 - Radiant energy
  • 348 - Television