4. Boots, shoes, and leggings

Johan A. Govaert

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Atmospheric potential measurement device

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

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Digital gain adjuster circuit for photomultiplier tubes

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent

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Image display system

Boots – shoes – and leggings
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Optical warning system

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Pulse processor

Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent

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Profile ID: LFUS-PAI-P-1143895

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