2591351

Information

• Patent Grant
• 2591351

• References
• Source

• Patent Number

  2,591,351

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1952
  72 years ago

• CPC

  • B42D5/001 - perforated or punched sheets
  • B42D5/006 - combined with auxiliary devices
  • B42D5/008 - with means for engaging sheet perforations or slots

• US Classifications

  • 281 - Books, strips, and leaves