3131671

Information

• Patent Grant
• 3131671

• References
• Source

• Patent Number

  3,131,671

• Date Filed

  Not available

• Date Issued

  Tuesday, May 5, 1964
  60 years ago

• CPC

  • G10K5/02 - Ultrasonic whistles
  • Y10S116/18 - Wave generators
  • Y10S116/19 - Wave generator with resonating element

• US Classifications

  • 116 - Signals and indicators
  • 367 - Communications, electrical: acoustic wave systems and devices