2155496

Information

• Patent Grant
• 2155496

• References
• Source

• Patent Number

  2,155,496

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1939
  85 years ago

• CPC

  • A44B1/40 - with helical wire-shank screwed into material
  • Y10T24/3668 - Spiral fastener
  • Y10T24/42 - Independent, headed, aperture pass-through fastener

• US Classifications

  • 024 - Buckles, buttons, clasps, etc.
  • 267 - Spring devices
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener