3812609

Information

• Patent Grant
• 3812609

• References
• Source

• Patent Number

  3,812,609

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1974
  50 years ago

• CPC

  • A47G1/0644 - using a tension wire for holding the members or corner pieces together

• US Classifications

  • 040 - Card, picture, or sign exhibiting