3204639

Information

• Patent Grant
• 3204639

• References
• Source

• Patent Number

  3,204,639

• Date Filed

  Not available

• Date Issued

  Tuesday, September 7, 1965
  59 years ago

• CPC

  • B42F21/08 - in one of a number of predetermined positions

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 116 - Signals and indicators
  • D19 - Office supplies