2553876

Information

• Patent Grant
• 2553876

• References
• Source

• Patent Number

  2,553,876

• Date Filed

  Not available

• Date Issued

  Tuesday, May 22, 1951
  73 years ago

• CPC

  • H04L13/02 - Details not particular to receiver or transmitter

• US Classifications

  • 178 - Telegraphy
  • 181 - Acoustics