3920609

Information

• Patent Grant
• 3920609

• References
• Source

• Patent Number

  3,920,609

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1975
  49 years ago

• CPC

  • B68G11/06 - with embedded springs
  • A47C27/05 - with padding material
  • A47C27/053 - with only one layer of foamed material

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 005 - Beds
  • 267 - Spring devices