2163939

Information

• Patent Grant
• 2163939

• References
• Source

• Patent Number

  2,163,939

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1939
  85 years ago

• CPC

  • H03C1/24 - modulating signal applied to different grid

• US Classifications

  • 332 - Modulators
  • 455 - Telecommunications