2197692

Information

• Patent Grant
• 2197692

• References
• Source

• Patent Number

  2,197,692

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1940
  84 years ago

• CPC

  • B61L19/14 - with electrical locks
  • B61L23/12 - partly operated by train

• US Classifications

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