3897619

Information

• Patent Grant
• 3897619

• References
• Source

• Patent Number

  3,897,619

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1975
  49 years ago

• CPC

  • E01D21/10 - Cantilevered erection
  • E04C5/10 - Ducts
  • E01D2101/28 - prestressed
  • Y10T29/49805 - Shaping by direct application of fluent pressure
  • Y10T29/49911 - by expanding inner annulus
  • Y10T29/4994 - Radially expanding internal tube

• US Classifications

  • 029 - Metal working
  • 052 - Static structures
  • 285 - Pipe joints or couplings