3590586

Information

• Patent Grant
• 3590586

• References
• Source

• Patent Number

  3,590,586

• Date Filed

  Not available

• Date Issued

  Tuesday, July 6, 1971
  53 years ago

• CPC

  • E21D23/0078 - with individual shifting devices

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 248 - Supports