2447753

Information

• Patent Grant
• 2447753

• References
• Source

• Patent Number

  2,447,753

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1948
  77 years ago

• CPC

  • H04M5/02 - Constructional details

• US Classifications

  • 379 - Telephonic communications
  • 174 - Electricity: conductors and insulators