3453589

Information

• Patent Grant
• 3453589

• References
• Source

• Patent Number

  3,453,589

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1969
  55 years ago

• CPC

  • G01S3/82 - with means for adjusting phase or compensating for time-lag errors
  • G01S1/72 - using ultrasonic, sonic or infrasonic waves

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices
  • 342 - Communications: directive radio wave systems and devices