2774963

Information

• Patent Grant
• 2774963

• References
• Source

• Patent Number

  2,774,963

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1956
  68 years ago

• CPC

  • G06K21/04 - in which coincidence of markings is sensed optically
  • H04M15/08 - Metering calls to called party
  • H04Q1/34 - Impulse regenerators with mechanical or other non-electrical marking arrangements

• US Classifications

  • 235 - Registers
  • 200 - Electricity: circuit makers and breakers
  • 341 - Coded data generation or conversion