4. Electricity: measuring and testing
  5. Measuring, testing, or sensing electricity, per se
  6. With electromagnetic field

Wendell K. Fredericks

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Adjustable piercing probe tip

Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Patent

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Air core gauge fixed voltage signal and variable pulse width mod

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural active motor elements
Patent

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Air core gauge, multi-frequency pulse width modulator system the

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With electromagnetic field
Patent

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Alkaline battery, composite separator therefor

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Patent

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Alkaline battery, electrolyte absorber therefor

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer – spacer or materials for use therewith
Patent

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Profile ID: LFUS-PAI-P-58888

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