2131634

Information

• Patent Grant
• 2131634

• References
• Source

• Patent Number

  2,131,634

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1938
  86 years ago

• CPC

  • F21S48/1181 - having a filament being arranged transversally to the optical axis of the headlamp
  • F21S48/10 - Headlamps
  • F21S48/1145 - Type of light source
  • F21S48/1168 - Incandescent light sources
  • F21S48/1172 - having two or more filaments
  • F21S48/1177 - characterised by the shape of the filament
  • F21S48/1233 - Cover glass

• US Classifications

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