1690630

Information

• Patent Grant
• 1690630

• References
• Source

• Patent Number

  1,690,630

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1928
  97 years ago

• CPC

  • E04D13/0409 - Drainage outlets
  • E04D2013/0413 - Strainers for drainage outlets
  • E04D2013/0436 - with sealing means
  • E04D2013/044 - on multiple levels

• US Classifications

  • 210 - Liquid purification or separation
  • 285 - Pipe joints or couplings