3668921

Information

• Patent Grant
• 3668921

• References
• Source

• Patent Number

  3,668,921

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • B30B15/048 - Laminated frame structures
  • B21J13/04 - Frames Guides
  • B30B15/04 - Frames Guides

• US Classifications

  • 072 - Metal deforming