1920150

Information

• Patent Grant
• 1920150

• References
• Source

• Patent Number

  1,920,150

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1933
  92 years ago

• CPC

  • H02M3/42 - with electromagnetically-operated vibrating contacts
  • Y10T307/898 - Vibrating relay

• US Classifications

  • 363 - Electric power conversion systems
  • 246 - Railway switches and signals
  • 307 - Electrical transmission or interconnection systems