2139132

Information

• Patent Grant
• 2139132

• References
• Source

• Patent Number

  2,139,132

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1938
  86 years ago

• CPC

  • B41F13/705 - Interleaving slip sheets

• US Classifications

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