2894442

Information

• Patent Grant
• 2894442

• References
• Source

• Patent Number

  2,894,442

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1959
  66 years ago

• CPC

  • B60H1/00442 - using a vacuum

• US Classifications

  • 454 - Ventilation
  • 180 - Motor vehicles