3567920

Information

• Patent Grant
• 3567920

• References
• Source

• Patent Number

  3,567,920

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1971
  53 years ago

• CPC

  • B61L1/165 - Electrical
  • B61L1/167 - Circuit details

• US Classifications

  • 246 - Railway switches and signals
  • 331 - Oscillators
  • 340 - Communications: electrical