3601448

Information

• Patent Grant
• 3601448

• References
• Source

• Patent Number

  3,601,448

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1971
  53 years ago

• CPC

  • E21C37/20 - by ultrasonics
  • E01C23/12 - for taking-up, tearing-up, or full-depth breaking-up paving
  • E21C37/18 - by electricity
  • H05B6/80 - Apparatus for specific applications

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 219 - Electric heating
  • 241 - Solid material comminution or disintegration