3730071

Information

• Patent Grant
• 3730071

• References
• Source

• Patent Number

  3,730,071

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1973
  51 years ago

• CPC

  • F24F13/072 - of elongated shape
  • E04B2009/026 - the supporting ceiling grid acting as air diffusers

• US Classifications

  • 454 - Ventilation
  • 138 - Pipes and tubular conduits
  • 239 - Fluid sprinkling, spraying, and diffusing