2091303

Information

• Patent Grant
• 2091303

• References
• Source

• Patent Number

  2,091,303

• Date Filed

  Not available

• Date Issued

  Tuesday, August 31, 1937
  87 years ago

• CPC

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

• US Classifications

  • 073 - Measuring and testing
  • 250 - Radiant energy
  • 318 - Electricity: motive power systems
  • 340 - Communications: electrical