1677910

Information

• Patent Grant
• 1677910

• References
• Source

• Patent Number

  1,677,910

• Date Filed

  Not available

• Date Issued

  Tuesday, July 24, 1928
  96 years ago

• CPC

  • B63J2/10 - Ventilating-shaft Air-scoops
  • F24F13/082 - Grilles, registers or guards
  • Y10S454/905 - Black out means

• US Classifications

  • 454 - Ventilation
  • 052 - Static structures