1929241

Information

• Patent Grant
• 1929241

• References
• Source

• Patent Number

  1,929,241

• Date Filed

  Not available

• Date Issued

  Tuesday, October 3, 1933
  92 years ago

• CPC

  • G08C15/10 - the signals being represented by frequencies or phase of current or voltage in transmission link

• US Classifications

  • 340 - Communications: electrical