2201551

Information

• Patent Grant
• 2201551

• References
• Source

• Patent Number

  2,201,551

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1940
  84 years ago

• CPC

  • B42F13/32 - the nesting portions of the rods and tubes being straight
  • B42F13/12 - with pillars, posts, rods, or tubes

• US Classifications

  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
  • 281 - Books, strips, and leaves
  • 402 - Binder device releasably engaging aperture or notch of sheet