1621224

Information

• Patent Grant
• 1621224

• References
• Source

• Patent Number

  1,621,224

• Date Filed

  Not available

• Date Issued

  Tuesday, March 15, 1927
  98 years ago

• CPC

  • F21V11/00 - Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
  • F21S48/1177 - characterised by the shape of the filament
  • F21S48/1323 - the reflector being a surface of revolution or a planar surface
  • F21S48/145 - Details of the shape of screens, non-reflecting members, light-shielding members or fixed shades
  • F21W2101/02 - for land vehicles

• US Classifications

  • 362 - Illumination