4. Optics: measuring and testing
  5. For light transmission or absorption
  6. Of fluent material

Fred T. Klein

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Battery charger having temperature compensated charge rate

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

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Chromatographic analyzer detector and method

Optics: measuring and testing – For light transmission or absorption – Of fluent material
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Method and apparatus for testing a plurality of geophones

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
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Profile ID: LFUS-PAI-P-1403912

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