2011145

Information

• Patent Grant
• 2011145

• References
• Source

• Patent Number

  2,011,145

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1935
  89 years ago

• CPC

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

• US Classifications

  • 380 - Cryptography