1271514

Information

• Patent Grant
• 1271514

• References
• Source

• Patent Number

  1,271,514

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1918
  106 years ago

• CPC

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

• US Classifications

  • 178 - Telegraphy