2690106

Information

• Patent Grant
• 2690106

• References
• Source

• Patent Number

  2,690,106

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1954
  70 years ago

• CPC

  • G03B27/26 - Cooling

• US Classifications

  • 355 - Photocopying
  • 362 - Illumination