3428940

Information

• Patent Grant
• 3428940

• References
• Source

• Patent Number

  3,428,940

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1969
  56 years ago

• CPC

  • G10K9/06 - produced by detonation

• US Classifications

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