4. Electricity: measuring and testing
  5. Electrolyte properties
  6. Using a battery testing device

Wm. C. Daubenspeck

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Battery electrolyte level sensor

Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent

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Linked-spar motion-compensated lifting system

Ships – Vessel raising and docking – Submerged
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Survey spar system for precision offshore seafloor surveys

Geometrical instruments – Indicator of direction of force traversing natural media – Borehole direction or inclination
Patent

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Profile ID: LFUS-PAI-P-97118

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