3815749

Information

• Patent Grant
• 3815749

• References
• Source

• Patent Number

  3,815,749

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • E03F1/002 - with disposal into the ground
  • E03F5/0405 - with an odour seal
  • E03F2005/0416 - with an odour seal

• US Classifications

  • 210 - Liquid purification or separation
  • 404 - Road structure, process, or apparatus