3861211

Information

• Patent Grant
• 3861211

• References
• Source

• Patent Number

  3,861,211

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1975
  50 years ago

• CPC

  • G01H5/00 - Measuring propagation velocity of ultrasonic, sonic or infrasonic waves
  • G01P5/248 - by measuring phase differences

• US Classifications

  • 073 - Measuring and testing