3350682

Information

• Patent Grant
• 3350682

• References
• Source

• Patent Number

  3,350,682

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1967
  57 years ago

• CPC

  • H03G7/02 - having discharge tubes
  • G01S1/72 - using ultrasonic, sonic or infrasonic waves
  • G01S7/529 - Gain of receiver varied automatically during pulse-recurrence period
  • Y10S367/901 - Noise or unwanted signal reduction in nonseismic receiving system

• US Classifications

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