2203311

Information

• Patent Grant
• 2203311

• References
• Source

• Patent Number

  2,203,311

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1940
  84 years ago

• CPC

  • E06B7/06 - with one ventilation wing only

• US Classifications

  • 454 - Ventilation
  • 055 - Gas separation
  • 160 - Flexible or portable closure, partition, or panel