2640144

Information

• Patent Grant
• 2640144

• References
• Source

• Patent Number

  2,640,144

• Date Filed

  Not available

• Date Issued

  Tuesday, May 26, 1953
  71 years ago

• CPC

  • G01D11/28 - Structurally-combined illuminating devices
  • G06C25/00 - Auxiliary functional arrangements
  • Y10S385/901 - Illuminating or display apparatus

• US Classifications

  • 362 - Illumination
  • 040 - Card, picture, or sign exhibiting
  • 049 - Movable or removable closures
  • 220 - Receptacles
  • 340 - Communications: electrical
  • 385 - Optical waveguides