3476932

Information

• Patent Grant
• 3476932

• References
• Source

• Patent Number

  3,476,932

• Date Filed

  Not available

• Date Issued

  Tuesday, November 4, 1969
  55 years ago

• CPC

  • B61L23/166 - using alternating current
  • B61L1/187 - Use of alternating current
  • B61L3/246 - using coded current

• US Classifications

  • 246 - Railway switches and signals