4. Weighing scales
  5. With testing

Harry J. Keen

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Digitally compensated hydraulic scale system

Boots – shoes – and leggings
Patent

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Dimension-measuring apparatus

Optics: measuring and testing – By configuration comparison – With photosensitive film or plate
Patent

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Electronic measuring system with pulsed power supply and stabili

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Electronic measuring system with pulsed transducer

Communications: electrical – Audible indication – Percussion-type sound producer
Patent

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Low power electronic measuring system

Coded data generation or conversion – Converter compensation – Temperature compensation
Patent

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Profile ID: LFUS-PAI-P-55796

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