1557957

Information

• Patent Grant
• 1557957

• References
• Source

• Patent Number

  1,557,957

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1925
  99 years ago

• CPC

  • F01B25/26 - Warning devices
  • Y10S200/13 - Shaft bearing and armature wear indicator switches

• US Classifications

  • 116 - Signals and indicators
  • 091 - Motors: expansible chamber type
  • 092 - Expansible chamber devices
  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical