3809431

Information

• Patent Grant
• 3809431

• References
• Source

• Patent Number

  3,809,431

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • E21C29/16 - Winches or other means for pulling cable or chain

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 198 - Conveyors: power-driven