1541436

Information

• Patent Grant
• 1541436

• References
• Source

• Patent Number

  1,541,436

• Date Filed

  Not available

• Date Issued

  Tuesday, June 9, 1925
  100 years ago

• CPC

  • E02D29/14 - Covers for manholes or the like Frames for covers
  • E03F2005/028 - Sealing joints between manhole segments

• US Classifications

  • 210 - Liquid purification or separation
  • 138 - Pipes and tubular conduits
  • 220 - Receptacles