3488966

Information

• Patent Grant
• 3488966

• References
• Source

• Patent Number

  3,488,966

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1970
  54 years ago

• CPC

  • E21D23/0047 - without essential shifting devices

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 248 - Supports