1999823

Information

• Patent Grant
• 1999823

• References
• Source

• Patent Number

  1,999,823

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1935
  89 years ago

• CPC

  • B61L1/045 - actuated by fluid-pressure

• US Classifications

  • 246 - Railway switches and signals
  • 200 - Electricity: circuit makers and breakers