1445389

Information

• Patent Grant
• 1445389

• References
• Source

• Patent Number

  1,445,389

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1923
  101 years ago

• CPC

  • F22B37/426 - Feed-water supply alarm devices using electric signals

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 236 - Automatic temperature and humidity regulation