3902357

Information

• Patent Grant
• 3902357

• References
• Source

• Patent Number

  3,902,357

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1975
  49 years ago

• CPC

  • G01S15/42 - Simultaneous measurement of distance and other co-ordinates
  • A61B8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
  • G01N29/0627 - Cathode-ray tube displays
  • G01N29/07 - by measuring propagation velocity or propagation time of acoustic waves
  • G01N29/348 - with frequency characteristics
  • G01S3/84 - with indication presented on cathode-ray tubes
  • G01S7/52057 - Cathode ray tube displays
  • G01N2291/044 - Internal reflections (echoes)

• US Classifications

  • 073 - Measuring and testing