2901603

Information

• Patent Grant
• 2901603

• References
• Source

• Patent Number

  2,901,603

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1959
  65 years ago

• CPC

  • H04M15/08 - Metering calls to called party
  • G11C19/202 - with vacuum tubes
  • H03K5/15013 - with more than two outputs
  • H03K17/52 - using gas-filled tubes
  • H04J3/04 - Distributors combined with modulators or demodulators
  • H04J3/042 - Distributors with electron or gas discharge tubes
  • H04M19/02 - providing ringing current or supervisory tones
  • H04N5/06 - Generation of synchronising signals
  • H04Q11/04 - for time-division multiplexing

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 235 - Registers
  • 348 - Television
  • 370 - Multiplex communications
  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems