1247759

Information

• Patent Grant
• 1247759

• References
• Source

• Patent Number

  1,247,759

• Date Filed

  Not available

• Date Issued

  Tuesday, November 27, 1917
  106 years ago

• CPC

  • H01H47/18 - for introducing delay in the operation of the relay
  • H03B11/06 - by mechanical interrupter
  • Y10T307/898 - Vibrating relay

• US Classifications

  • 307 - Electrical transmission or interconnection systems