2788061

Information

• Patent Grant
• 2788061

• References
• Source

• Patent Number

  2,788,061

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1957
  68 years ago

• CPC

  • A47C27/146 - on the outside surface of the mattress
  • A47C7/18 - having foamed material included in cushioning part
  • A47C7/746 - without active means
  • B29C44/005 - Avoiding skin formation; Making foams with porous surfaces
  • B68G5/02 - of cellular material
  • B29C37/0053 - Moulding articles characterised by the shape of the surface

• US Classifications

  • 267 - Spring devices