3810325

Information

• Patent Grant
• 3810325

• References
• Source

• Patent Number

  3,810,325

• Date Filed

  Not available

• Date Issued

  Tuesday, May 14, 1974
  50 years ago

• CPC

  • G09D3/06 - with rotatable members

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • D19 - Office supplies