1999082

Information

• Patent Grant
• 1999082

• References
• Source

• Patent Number

  1,999,082

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1935
  89 years ago

• CPC

  • B21F37/02 - of resilient rings
  • F16B39/282 - Locking by means of special shape of work-engaging surfaces
  • Y10S411/958 - Coiled washer

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • 470 - Threaded, headed fastener, or washer making: process and apparatus