3721198

Information

• Patent Grant
• 3721198

• References
• Source

• Patent Number

  3,721,198

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • B61C15/04 - by controlling wheel pressure
  • B62D37/02 - by aerodynamic means

• US Classifications

  • 104 - Railways