3330524

Information

• Patent Grant
• 3330524

• References
• Source

• Patent Number

  3,330,524

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1967
  57 years ago

• CPC

  • B42D3/126 - enabling the book to be positioned upright

• US Classifications

  • 248 - Supports
  • D19 - Office supplies