3924451

Information

• Patent Grant
• 3924451

• References
• Source

• Patent Number

  3,924,451

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1975
  49 years ago

• CPC

  • G01N33/24 - earth materials
  • G01M7/045 - in a circular direction
  • G01M7/06 - Multidirectional test stands
  • G01N29/12 - by measuring frequency or resonance of acoustic waves

• US Classifications

  • 073 - Measuring and testing