1428937

Information

• Patent Grant
• 1428937

• References
• Source

• Patent Number

  1,428,937

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1922
  102 years ago

• CPC

  • B42D9/02 - Automatic bookmarkers

• US Classifications

  • 040 - Card, picture, or sign exhibiting