3385392

Information

• Patent Grant
• 3385392

• References
• Source

• Patent Number

  3,385,392

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1968
  56 years ago

• CPC

  • G10K7/005 - Ultrasonic sirens
  • E01H13/00 - Dispersing or preventing fog in general
  • G10K7/02 - in which the sound-producing member is rotated manually or by a motor

• US Classifications

  • 181 - Acoustics
  • 116 - Signals and indicators