1257537

Information

• Patent Grant
• 1257537

• References
• Source

• Patent Number

  1,257,537

• Date Filed

  Not available

• Date Issued

  Tuesday, February 26, 1918
  107 years ago

• CPC

  • F16B35/06 - Specially-shaped heads
  • Y10S411/997 - Longitudinal fastener

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener