2218887

Information

• Patent Grant
• 2218887

• References
• Source

• Patent Number

  2,218,887

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1940
  84 years ago

• CPC

  • E06B7/06 - with one ventilation wing only

• US Classifications

  • 052 - Static structures
  • 160 - Flexible or portable closure, partition, or panel
  • 454 - Ventilation