3437991

Information

• Patent Grant
• 3437991

• References
• Source

• Patent Number

  3,437,991

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1969
  56 years ago

• CPC

  • G01V1/24 - Recording seismic data
  • G01V1/242 - Seismographs

• US Classifications

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