3689874

Information

• Patent Grant
• 3689874

• References
• Source

• Patent Number

  3,689,874

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • G01V1/366 - by correlation of seismic signals
  • G01V2210/59 - Other corrections

• US Classifications

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