3788080

Information

• Patent Grant
• 3788080

• References
• Source

• Patent Number

  3,788,080

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1974
  51 years ago

• CPC

  • E03F5/021 - Connection of sewer pipes to manhole shaft
  • B28B7/168 - for holders or similar hollow articles
  • B28B21/76 - Moulds
  • E02D29/12 - Manhole shafts Other inspection or access chambers Accessories therefor
  • E02D29/149 - Annular gaskets
  • E03F5/02 - Manhole shafts or other inspection chambers snow-filling openings accessories
  • E03F2005/028 - Sealing joints between manhole segments
  • Y10T29/4998 - Combined manufacture including applying or shaping of fluent material
  • Y10T137/6991 - Ground supporting enclosure

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 029 - Metal working
  • 052 - Static structures
  • 137 - Fluid handling
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 277 - Seal for a joint or juncture
  • 285 - Pipe joints or couplings