2248459

Information

• Patent Grant
• 2248459

• References
• Source

• Patent Number

  2,248,459

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1941
  83 years ago

• CPC

  • G10K7/005 - Ultrasonic sirens

• US Classifications

  • 116 - Signals and indicators
  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing