3721378

Information

• Patent Grant
• 3721378

• References
• Source

• Patent Number

  3,721,378

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • G03D15/08 - Flattening prints
  • E21F17/04 - Distributing means for power supply in mines

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 226 - Advancing material of indeterminate length
  • 242 - Winding, tensioning, or guiding