3721951

Information

• Patent Grant
• 3721951

• References
• Source

• Patent Number

  3,721,951

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • B63B39/12 - for indicating draught or load
  • G01S1/02 - using radio waves

• US Classifications

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