1398985

Information

• Patent Grant
• 1398985

• References
• Source

• Patent Number

  1,398,985

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1921
  103 years ago

• CPC

  • F16L5/12 - the pipe being cut in two pieces
  • Y10S165/441 - Helical

• US Classifications

  • 165 - Heat exchange
  • 122 - Liquid heaters and vaporizers
  • 285 - Pipe joints or couplings