3168619

Information

• Patent Grant
• 3168619

• References
• Source

• Patent Number

  3,168,619

• Date Filed

  Not available

• Date Issued

  Tuesday, February 2, 1965
  59 years ago

• CPC

  • H04M9/001 - Two-way communication systems between a limited number of parties
  • H04M9/08 - Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
  • Y10S84/19 - Light sensitive resistor

• US Classifications

  • 379 - Telephonic communications
  • 084 - Music
  • 333 - Wave transmission lines and networks
  • 338 - Electrical resistors