3152509

Information

• Patent Grant
• 3152509

• References
• Source

• Patent Number

  3,152,509

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1964
  60 years ago

• CPC

  • G03B27/26 - Cooling
  • G03B21/16 - Cooling Preventing overheating
  • G03B21/20 - Lamp houses

• US Classifications

  • 353 - Optics: image projectors
  • 352 - Optics: motion pictures
  • 362 - Illumination