3889475

Information

• Patent Grant
• 3889475

• References
• Source

• Patent Number

  3,889,475

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • E21D23/063 - Retractable cantilever extensions therefor

• US Classifications

  • 405 - Hydraulic and earth engineering