1805585

Information

• Patent Grant
• 1805585

• References
• Source

• Patent Number

  1,805,585

• Date Filed

  Not available

• Date Issued

  Tuesday, May 19, 1931
  93 years ago

• CPC

  • F01B25/06 - responsive to speed

• US Classifications

  • 105 - Railway rolling stock
  • 340 - Communications: electrical