3390857

Information

• Patent Grant
• 3390857

• References
• Source

• Patent Number

  3,390,857

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1968
  56 years ago

• CPC

  • B60N2/7047 - Springs

• US Classifications

  • 248 - Supports
  • 297 - Chairs and seats