4. Pulse or digital communications
  5. Repeaters
  6. Testing

Daniel E. Andrews, Jr.

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Encoded echo-ranging signal generator

Communications: electrical – Selective – Monitoring in addition to control
Patent

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Secure communication system

Pulse or digital communications – Repeaters – Testing
Patent

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Vibration isolation module for towed seismic arrays

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent

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Profile ID: LFUS-PAI-P-1370440

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