3717935

Information

• Patent Grant
• 3717935

• References
• Source

• Patent Number

  3,717,935

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1973
  52 years ago

• CPC

  • G01V1/181 - Geophones
  • G01C9/04 - Transmission means between sensing element and final indicator for giving an enlarged reading

• US Classifications

  • 033 - Geometrical instruments