3803815

Information

• Patent Grant
• 3803815

• References
• Source

• Patent Number

  3,803,815

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1974
  50 years ago

• CPC

  • A47L9/1454 - Self-sealing closures
  • B01D46/02 - Particle separators
  • Y10S55/02 - Vacuum cleaner bags

• US Classifications

  • 055 - Gas separation
  • 493 - Manufacturing container or tube from paper