1809898

Information

• Patent Grant
• 1809898

• References
• Source

• Patent Number

  1,809,898

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1931
  93 years ago

• CPC

  • F16K31/02 - electric magnetic
  • G01K5/465 - using electrical contact making or breaking devices

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 073 - Measuring and testing
  • 267 - Spring devices
  • 374 - Thermal measuring and testing