1934040

Information

• Patent Grant
• 1934040

• References
• Source

• Patent Number

  1,934,040

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1933
  91 years ago

• CPC

  • B42F13/0046 - against ring damage

• US Classifications

  • 402 - Binder device releasably engaging aperture or notch of sheet