1478148

Information

• Patent Grant
• 1478148

• References
• Source

• Patent Number

  1,478,148

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1923
  101 years ago

• CPC

  • B60Q1/14 - having dimming means
  • F21S48/1225 - Type of refractor, transparent cover plates or filters
  • F21S48/145 - Details of the shape of screens, non-reflecting members, light-shielding members or fixed shades
  • F21S48/1789 - Rotating screens
  • F21V11/18 - movable
  • F21W2101/02 - for land vehicles

• US Classifications

  • 362 - Illumination