1721195

Information

• Patent Grant
• 1721195

• References
• Source

• Patent Number

  1,721,195

• Date Filed

  Not available

• Date Issued

  Tuesday, July 16, 1929
  95 years ago

• CPC

  • E02D17/12 - Back-filling of foundation trenches or ditches
  • E03F3/06 - Methods of, or installations for, laying sewer pipes

• US Classifications

  • 404 - Road structure, process, or apparatus
  • 052 - Static structures