2474317

Information

• Patent Grant
• 2474317

• References
• Source

• Patent Number

  2,474,317

• Date Filed

  Not available

• Date Issued

  Tuesday, June 28, 1949
  75 years ago

• CPC

  • F21V5/005 - using micro-prisms
  • F21V5/003 - using holograms

• US Classifications

  • 362 - Illumination