1671852

Information

• Patent Grant
• 1671852

• References
• Source

• Patent Number

  1,671,852

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1928
  96 years ago

• CPC

  • B60C23/0403 - Mechanically generated audible signals
  • Y10S220/16 - Pressure indicators

• US Classifications

  • 116 - Signals and indicators
  • 073 - Measuring and testing
  • 138 - Pipes and tubular conduits
  • 220 - Receptacles
  • D10 - Measuring, testing, or signalling instruments