3835757

Information

• Patent Grant
• 3835757

• References
• Source

• Patent Number

  3,835,757

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1974
  50 years ago

• CPC

  • B60H1/265 - Openings in window or door past or pillars
  • B60S1/54 - using gas

• US Classifications

  • 454 - Ventilation