2658687

Information

• Patent Grant
• 2658687

• References
• Source

• Patent Number

  2,658,687

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1953
  71 years ago

• CPC

  • G05D23/2239 - using photoelectric elements

• US Classifications

  • 065 - Glass manufacturing
  • 062 - Refrigeration
  • 165 - Heat exchange
  • 236 - Automatic temperature and humidity regulation
  • 239 - Fluid sprinkling, spraying, and diffusing