1667542

Information

• Patent Grant
• 1667542

• References
• Source

• Patent Number

  1,667,542

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1928
  96 years ago

• CPC

  • B43L17/02 - for blotting-paper sheets
  • Y10S428/916 - Fraud or tamper detecting
  • Y10T428/31848 - Next to cellulosic

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 283 - Printed matter