1381437

Information

• Patent Grant
• 1381437

• References
• Source

• Patent Number

  1,381,437

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1921
  103 years ago

• CPC

  • B23G9/005 - Working nuts

• US Classifications

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