1956348

Information

• Patent Grant
• 1956348

• References
• Source

• Patent Number

  1,956,348

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1934
  90 years ago

• CPC

  • B21D53/20 - washers
  • Y10S411/943 - Flexible washer
  • Y10S411/979 - Resilient

• US Classifications

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