3849607

Information

• Patent Grant
• 3849607

• References
• Source

• Patent Number

  3,849,607

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1974
  50 years ago

• CPC

  • H04Q1/38 - using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
  • H03K17/6235 - with storage of control signal
  • H03K17/6285 - with several outputs only combined with selecting means
  • H03K17/663 - using complementary bipolar transistors

• US Classifications

  • 379 - Telephonic communications
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 361 - Electricity: electrical systems and devices