1820870

Information

• Patent Grant
• 1820870

• References
• Source

• Patent Number

  1,820,870

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1931
  93 years ago

• CPC

  • B23P19/025 - For detaching only
  • B25B27/02 - for connecting objects by press fit or detaching same
  • Y10T29/53939 - Thread protector [e.g., wheel axle type]

• US Classifications

  • 029 - Metal working
  • 470 - Threaded, headed fastener, or washer making: process and apparatus