3620327

Information

• Patent Grant
• 3620327

• References
• Source

• Patent Number

  3,620,327

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • G01V1/108 - by deforming or displacing surfaces of enclosures

• US Classifications

  • 181 - Acoustics