3831548

Information

• Patent Grant
• 3831548

• References
• Source

• Patent Number

  3,831,548

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1974
  50 years ago

• CPC

  • A01M29/18 - using ultrasonic signals
  • G10K5/02 - Ultrasonic whistles

• US Classifications

  • 116 - Signals and indicators
  • 043 - Fishing, trapping, and vermin destroying
  • 417 - Pumps