3731053

Information

• Patent Grant
• 3731053

• References
• Source

• Patent Number

  3,731,053

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1973
  51 years ago

• CPC

  • B61D27/0027 - for freight cars; Isothermic wagons

• US Classifications

  • 219 - Electric heating
  • 105 - Railway rolling stock
  • 165 - Heat exchange
  • 392 - Electric resistance heating devices
  • 454 - Ventilation