3720568

Information

• Patent Grant
• 3720568

• References
• Source

• Patent Number

  3,720,568

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1973
  52 years ago

• CPC

  • A47C7/282 - with mesh-like supports
  • A47C5/06 - Special adaptation of seat upholstery or fabric for attachment to tubular chairs
  • A47C7/16 - Seats made of wooden, plastics, or metal sheet material Panel seats
  • A47C7/285 - with metal strips or webs
  • A47C7/30 - with springs meandering in a flat plane
  • D01H7/048 - with means using plastic deformation of members
  • Y10T428/12333 - Helical or with helical component
  • Y10T428/24008 - including fastener for attaching to external surface

• US Classifications

  • 267 - Spring devices
  • 297 - Chairs and seats
  • 428 - Stock material or miscellaneous articles