3698196

Information

• Patent Grant
• 3698196

• References
• Source

• Patent Number

  3,698,196

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1972
  52 years ago

• CPC

  • E21D1/16 - by petrification

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 052 - Static structures