3007004

Information

• Patent Grant
• 3007004

• References
• Source

• Patent Number

  3,007,004

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1961
  64 years ago

• CPC

  • H04M15/38 - Charging, billing or metering by apparatus other than mechanical step-by-step counter type
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • H03M2201/01 - First edition
  • H03M2201/196 - Communications systems
  • H03M2201/198 - Computing systems
  • H03M2201/20 - A/D converters
  • H03M2201/30 - D/A converters
  • H03M2201/4135 - Momentary value
  • H03M2201/4212 - Serial
  • H03M2201/4233 - Bivalued
  • H03M2201/425 - Non-denominational
  • H03M2201/4258 - Denominational
  • H03M2201/4279 - Pure
  • H03M2201/8112 - Gaseous tubes
  • H03M2201/8116 - Counting tubes Beam switching tubes
  • H03M2201/8128 - Diodes

• US Classifications

  • 379 - Telephonic communications