1786815

Information

• Patent Grant
• 1786815

• References
• Source

• Patent Number

  1,786,815

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1930
  94 years ago

• CPC

  • B60L15/32 - Control or regulation of multiple-unit electrically-propelled vehicles
  • B60L2200/26 - Rail vehicles
  • Y10T307/375 - Different frequencies
  • Y10T307/484 - Sequential or alternating
  • Y10T307/664 - Differing frequencies
  • Y10T307/852 - Frequency
  • Y10T307/944 - Power circuit controlled

• US Classifications

  • 318 - Electricity: motive power systems
  • 104 - Railways
  • 105 - Railway rolling stock
  • 246 - Railway switches and signals
  • 307 - Electrical transmission or interconnection systems