3687439

Information

• Patent Grant
• 3687439

• References
• Source

• Patent Number

  3,687,439

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  52 years ago

• CPC

  • B61F5/06 - incorporating metal springs
  • B61F5/307 - incorporating fluid springs
  • B61F5/32 - Guides

• US Classifications

  • 267 - Spring devices
  • 105 - Railway rolling stock