1674986

Information

• Patent Grant
• 1674986

• References
• Source

• Patent Number

  1,674,986

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1928
  96 years ago

• CPC

  • B21K1/705 - Castellated nuts
  • Y10S411/945 - Cross key

• US Classifications

  • 470 - Threaded, headed fastener, or washer making: process and apparatus
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • D25 - Building units and construction elements