2759999

Information

• Patent Grant
• 2759999

• References
• Source

• Patent Number

  2,759,999

• Date Filed

  Not available

• Date Issued

  Tuesday, August 21, 1956
  68 years ago

• CPC

  • H04M9/087 - using different frequency bands for transmitting and receiving paths ; using phase shifting arrangements

• US Classifications

  • 379 - Telephonic communications