1887530

Information

• Patent Grant
• 1887530

• References
• Source

• Patent Number

  1,887,530

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1932
  92 years ago

• CPC

  • B42F13/004 - Devices for protecting or reinforcing covers
  • B42F13/0013 - made of special materials

• US Classifications

  • 402 - Binder device releasably engaging aperture or notch of sheet
  • 281 - Books, strips, and leaves