3553749

Information

• Patent Grant
• 3553749

• References
• Source

• Patent Number

  3,553,749

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1971
  54 years ago

• CPC

  • A47C27/15 - consisting of two or more layers
  • A41D13/015 - with shock-absorbing means
  • B65G11/023 - for articles
  • F16F1/37 - of foam-like material, i.e. micro-cellular material
  • F16F3/093 - the springs being of different materials
  • B65G2812/088 - characterised by the material

• US Classifications

  • 267 - Spring devices