3474880

Information

• Patent Grant
• 3474880

• References
• Source

• Patent Number

  3,474,880

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1969
  55 years ago

• CPC

  • G01V1/112 - for use on the surface of the earth
  • G01V1/09 - Transporting arrangements

• US Classifications

  • 181 - Acoustics