1863374

Information

• Patent Grant
• 1863374

• References
• Source

• Patent Number

  1,863,374

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1932
  92 years ago

• CPC

  • H04J7/02 - in which the polarity of the amplitude is characteristic

• US Classifications

  • 370 - Multiplex communications
  • 332 - Modulators