1798041

Information

• Patent Grant
• 1798041

• References
• Source

• Patent Number

  1,798,041

• Date Filed

  Not available

• Date Issued

  Tuesday, March 24, 1931
  93 years ago

• CPC

  • F24F13/15 - with parallel simultaneously tiltable lamellae
  • Y10S292/18 - Gang locks
  • Y10S454/906 - Noise inhibiting means

• US Classifications

  • 454 - Ventilation
  • 049 - Movable or removable closures
  • 292 - Closure fasteners