3403748

Information

• Patent Grant
• 3403748

• References
• Source

• Patent Number

  3,403,748

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1968
  56 years ago

• CPC

  • G01V1/112 - for use on the surface of the earth

• US Classifications

  • 181 - Acoustics