2069817

Information

• Patent Grant
• 2069817

• References
• Source

• Patent Number

  2,069,817

• Date Filed

  Not available

• Date Issued

  Tuesday, February 9, 1937
  87 years ago

• CPC

  • H04R13/02 - Telephone receivers

• US Classifications

  • 381 - Electrical audio signal processing systems and devices
  • 439 - Electrical connectors