3491798

Information

• Patent Grant
• 3491798

• References
• Source

• Patent Number

  3,491,798

• Date Filed

  Not available

• Date Issued

  Tuesday, January 27, 1970
  55 years ago

• CPC

  • F28F11/04 - using pairs of obturating elements
  • F16L55/13 - the closure device being a plug fixed by plastic deformation
  • Y10T29/49805 - Shaping by direct application of fluent pressure

• US Classifications

  • 138 - Pipes and tubular conduits
  • 029 - Metal working
  • 228 - Metal fusion bonding