1678092

Information

• Patent Grant
• 1678092

• References
• Source

• Patent Number

  1,678,092

• Date Filed

  Not available

• Date Issued

  Tuesday, July 24, 1928
  96 years ago

• CPC

  • H01K9/08 - to provide selectively different light effects
  • F21S48/1172 - having two or more filaments
  • F21S48/1177 - characterised by the shape of the filament
  • F21V7/04 - Optical design
  • H01K1/18 - Mountings or supports for the incandescent body
  • F21W2101/02 - for land vehicles

• US Classifications

  • 362 - Illumination
  • 313 - Electric lamp and discharge devices