3664047

Information

• Patent Grant
• 3664047

• References
• Source

• Patent Number

  3,664,047

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • H01H9/16 - Indicators for switching condition
  • G02B5/04 - Prisms
  • G08B5/02 - using only mechanical transmission
  • G09F13/16 - Signs formed of or incorporating reflecting elements or surfaces

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 116 - Signals and indicators