1921809

Information

• Patent Grant
• 1921809

• References
• Source

• Patent Number

  1,921,809

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  91 years ago

• CPC

  • F16L55/1011 - Soluble closing devices
  • Y10T29/4981 - Utilizing transitory attached element or associated separate material
  • Y10T29/49993 - Filling of opening
  • Y10T137/1797 - Heat destructible or fusible
  • Y10T137/612 - Tapping a pipe, keg, or apertured tank under pressure

• US Classifications

  • 138 - Pipes and tubular conduits
  • 029 - Metal working
  • 137 - Fluid handling
  • 220 - Receptacles
  • 285 - Pipe joints or couplings