2487933

Information

• Patent Grant
• 2487933

• References
• Source

• Patent Number

  2,487,933

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1949
  75 years ago

• CPC

  • F22B37/426 - Feed-water supply alarm devices using electric signals
  • Y10T137/7368 - Servo relay operation of control

• US Classifications

  • 105 - Railway rolling stock
  • 122 - Liquid heaters and vaporizers
  • 137 - Fluid handling
  • 251 - Valves and valve actuation
  • 303 - Fluid-pressure and analogous brake systems
  • 340 - Communications: electrical