2248757

Information

• Patent Grant
• 2248757

• References
• Source

• Patent Number

  2,248,757

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1941
  83 years ago

• CPC

  • H03G7/008 - Control by a pilot signal

• US Classifications

  • 455 - Telecommunications
  • 333 - Wave transmission lines and networks
  • 370 - Multiplex communications
  • 381 - Electrical audio signal processing systems and devices