2623937

Information

• Patent Grant
• 2623937

• References
• Source

• Patent Number

  2,623,937

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1952
  72 years ago

• CPC

  • H04M7/08 - for phantom working
  • H04M11/002 - with telemetering systems

• US Classifications

  • 379 - Telephonic communications