3892100

Information

• Patent Grant
• 3892100

• References
• Source

• Patent Number

  3,892,100

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1975
  49 years ago

• CPC

  • E21D20/003 - Machines for drilling anchor holes and setting anchor bolts
  • E21D19/00 - Provisional protective covers for working space
  • E21D19/04 - for use in drifting galleries

• US Classifications

  • 405 - Hydraulic and earth engineering