2089313

Information

• Patent Grant
• 2089313

• References
• Source

• Patent Number

  2,089,313

• Date Filed

  Not available

• Date Issued

  Tuesday, August 10, 1937
  87 years ago

• CPC

  • B42F13/004 - Devices for protecting or reinforcing covers

• US Classifications

  • 281 - Books, strips, and leaves