1897753

Information

• Patent Grant
• 1897753

• References
• Source

• Patent Number

  1,897,753

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1933
  92 years ago

• CPC

  • F16T1/45 - Means for venting or aerating
  • F16T1/22 - of closed-hollow-body type

• US Classifications

  • 236 - Automatic temperature and humidity regulation