1453359

Information

• Patent Grant
• 1453359

• References
• Source

• Patent Number

  1,453,359

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1923
  101 years ago

• CPC

  • H04L15/285 - Telegraph sounders; Apparatus for acoustic reception

• US Classifications

  • 178 - Telegraphy