Helmut Winnacker

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Apparatus for charging a hermetically sealed electrical energy s

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent

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Borehole logging apparatus for deep well drilling

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Reexamination Certificate

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Borehole logging apparatus for deep well drillings with a...

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Controllable pressure-reducing valve and device for the...

Fluid handling – Systems – Multi-way valve unit
Reexamination Certificate

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Deep sea underwater camera

Patent

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Profile ID: LFUS-PAI-P-543935

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