3890792

Information

• Patent Grant
• 3890792

• References
• Source

• Patent Number

  3,890,792

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1975
  49 years ago

• CPC

  • E21D23/0095 - Temporary supports at the driving front

• US Classifications

  • 405 - Hydraulic and earth engineering