2182170

Information

• Patent Grant
• 2182170

• References
• Source

• Patent Number

  2,182,170

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1939
  85 years ago

• CPC

  • B61L1/161 - characterised by the counting methods
  • B61L1/164 - Mechanical

• US Classifications

  • 246 - Railway switches and signals