3769643

Information

• Patent Grant
• 3769643

• References
• Source

• Patent Number

  3,769,643

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1973
  51 years ago

• CPC

  • A47C23/0433 - of different resilience
  • A47C21/06 - Mattress underlays
  • A47C23/34 - with provisions for giving extra support for the head or the legs
  • A47C27/00 - Stuffed or fluid mattresses specially adapted for chairs, beds or sofas
  • A47C27/0456 - Use of stiffening sheets, lattices or grids in, on, or under, spring inlays
  • A47C27/062 - of different resiliencies

• US Classifications

  • 005 - Beds