3178221

Information

• Patent Grant
• 3178221

• References
• Source

• Patent Number

  3,178,221

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1965
  59 years ago

• CPC

  • A47C7/445 - with leaf springs
  • A47C7/345 - of adjustable resilience
  • A47C7/441 - with adjustable elasticity
  • A47C7/443 - with coil springs

• US Classifications

  • 297 - Chairs and seats