3721883

Information

• Patent Grant
• 3721883

• References
• Source

• Patent Number

  3,721,883

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • G05D3/1427 - with non-linear amplifier chain

• US Classifications

  • 318 - Electricity: motive power systems
  • 346 - Recorders