2221376

Information

• Patent Grant
• 2221376

• References
• Source

• Patent Number

  2,221,376

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • E21D15/34 - by axially- moving balls, rollers, or the like
  • E21B19/10 - Slips Spiders; Catching devices

• US Classifications

  • 254 - Implements or apparatus for applying pushing or pulling force