1947778

Information

• Patent Grant
• 1947778

• References
• Source

• Patent Number

  1,947,778

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1934
  91 years ago

• CPC

  • C10K1/22 - Apparatus
  • Y02P20/129 - Energy recovery

• US Classifications

  • 048 - Gas: heating and illuminating