3729702

Information

• Patent Grant
• 3729702

• References
• Source

• Patent Number

  3,729,702

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1973
  51 years ago

• CPC

  • G10K5/02 - Ultrasonic whistles
  • F15C1/005 - for measurement techniques
  • G01H3/10 - Amplitude Power
  • G01N29/024 - by measuring propagation velocity or propagation time of acoustic waves
  • G01N29/24 - Probes
  • G01S13/12 - wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse
  • G01S15/12 - wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse
  • G01S15/32 - using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices
  • 181 - Acoustics