2201936

Information

• Patent Grant
• 2201936

• References
• Source

• Patent Number

  2,201,936

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1940
  84 years ago

• CPC

  • F04B39/068 - prevention of freezing
  • F04B53/08 - Cooling Heating Preventing freezing

• US Classifications

  • 138 - Pipes and tubular conduits