1491227

Information

• Patent Grant
• 1491227

• References
• Source

• Patent Number

  1,491,227

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1924
  100 years ago

• CPC

  • E21B1/04 - Devices for reversing the movement of the rod or cable at the surface

• US Classifications

  • 384 - Bearings