4. Acoustics
  5. Geophysical or subsurface exploration
  6. Well logging

John B. Farr

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Combined electret hydrophone and transmission line

Communications: electrical – Selective – Having indication or alarm
Patent

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Component architecture for medical device system networks

Electrical computers and digital processing systems: multicomput – Distributed data processing – Client/server
Reexamination Certificate

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Downhole seismic source

Acoustics – Geophysical or subsurface exploration – Well logging
Patent

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Downhole seismic source

Communications: electrical – Selective – Interrogation response
Patent

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Profile ID: LFUS-PAI-P-801425

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