1704736

Information

• Patent Grant
• 1704736

• References
• Source

• Patent Number

  1,704,736

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1929
  95 years ago

• CPC

  • B61L23/165 - using rectified alternating current
  • Y10T307/944 - Power circuit controlled

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 246 - Railway switches and signals
  • 307 - Electrical transmission or interconnection systems