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Douglas W. Sweet

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Digital frequency measuring circuitry

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
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Digital tachometer

Data processing: measuring – calibrating – or testing – Measurement system – Speed
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Motor vehicle speed control system

Boots – shoes – and leggings
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Serial pulse frequency converter

Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Pulse multiplication or division
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