2517640

Information

• Patent Grant
• 2517640

• References
• Source

• Patent Number

  2,517,640

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1950
  74 years ago

• CPC

  • B42F13/004 - Devices for protecting or reinforcing covers

• US Classifications

  • 281 - Books, strips, and leaves