1587663

Information

• Patent Grant
• 1587663

• References
• Source

• Patent Number

  1,587,663

• Date Filed

  Not available

• Date Issued

  Tuesday, June 8, 1926
  98 years ago

• CPC

  • F28F11/04 - using pairs of obturating elements

• US Classifications

  • 138 - Pipes and tubular conduits