3870495

Information

• Patent Grant
• 3870495

• References
• Source

• Patent Number

  3,870,495

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1975
  50 years ago

• CPC

  • B60H3/0658 - Filter elements specially adapted for their arrangement in vehicles
  • B01D39/1615 - of natural origin
  • B01D46/0001 - Making filtering elements
  • B01D46/0043 - containing fixed gas displacement elements or cores
  • B01D46/2411 - Filter cartridges
  • B01D46/521 - using folded, pleated material
  • B01D2275/10 - Multiple layers
  • B01D2275/201 - Conical shape
  • B60H3/0608 - Filter arrangements in the air stream
  • B60H2003/065 - Details for holding filter elements in position
  • B60H2003/0666 - the filter element having non-rectangular shape

• US Classifications

  • 055 - Gas separation
  • 454 - Ventilation