1216317

Information

• Patent Grant
• 1216317

• References
• Source

• Patent Number

  1,216,317

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1917
  108 years ago

• CPC

  • F16L13/113 - for concrete pipes
  • Y10S285/925 - Swells when wet

• US Classifications

  • 285 - Pipe joints or couplings
  • 052 - Static structures