3633228

Information

• Patent Grant
• 3633228

• References
• Source

• Patent Number

  3,633,228

• Date Filed

  Not available

• Date Issued

  Tuesday, January 11, 1972
  52 years ago

• CPC

  • A47C7/20 - with reinforcement in the foam layer
  • A47C27/064 - Pocketed springs
  • A47C27/144 - inside the mattress
  • A47C27/20 - with springs moulded in, or situated in cavities or openings in foamed material
  • B68G11/06 - with embedded springs

• US Classifications

  • 267 - Spring devices
  • 005 - Beds