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Sonar directional beam focusing system

  • US 3,239,799 A
  • Filed: 11/27/1961
  • Issued: 03/08/1966
  • Est. Priority Date: 11/27/1961
  • Status: Expired due to Term
First Claim
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1. IN A SONAR RECEIVER AN ARRAY OF TRANSDUCERS ARRANGED TO RECEIVE WAVE FORM FROM A VARIETY OF DIRECTIONS AND TO CONVERT SAID WAVE FORMS OF ELECTRICAL SIGNALS, MEANS FOR AMPLIFYING THE ELECTRICAL SIGNALS FROM EACH OF SAID TRANSDUCERS, SECOND TRANSDUCER MEANS ARRANGED ALONG A CURVED SURFACE FOR CONVERTING SAID ELECTRICAL SIGNALS TO SOUND WAVES, SAID ARRANGEMENT ALONG A CURVED SURFACE SERVING TO FOCUS SAID SOUND WAVES ON ANOTHER SURFACE COMPRISING

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