2606252

Information

• Patent Grant
• 2606252

• References
• Source

• Patent Number

  2,606,252

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1952
  72 years ago

• CPC

  • H04R3/08 - of electromagnetic transducers
  • H04M9/08 - Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
  • H04M9/087 - using different frequency bands for transmitting and receiving paths ; using phase shifting arrangements

• US Classifications

  • 379 - Telephonic communications