3890595

Information

• Patent Grant
• 3890595

• References
• Source

• Patent Number

  3,890,595

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • B60C23/0403 - Mechanically generated audible signals
  • B60C23/0469 - Transmission by sound
  • F16K37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

• US Classifications

  • 340 - Communications: electrical
  • 073 - Measuring and testing
  • 116 - Signals and indicators