3803854

Information

• Patent Grant
• 3803854

• References
• Source

• Patent Number

  3,803,854

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1974
  50 years ago

• CPC

  • E02D7/30 - by driving cores

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 242 - Winding, tensioning, or guiding