3833897

Information

• Patent Grant
• 3833897

• References
• Source

• Patent Number

  3,833,897

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1974
  50 years ago

• CPC

  • G08B13/122 - for a perimeter fence
  • G08B13/169 - using cable transducer means

• US Classifications

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