3886315

Information

• Patent Grant
• 3886315

• References
• Source

• Patent Number

  3,886,315

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1975
  50 years ago

• CPC

  • H04Q1/38 - using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
  • H04Q3/521 - using semiconductors in the switching stages

• US Classifications

  • 379 - Telephonic communications