4. Boots, shoes, and leggings

William F. M. Jacobsen

Inventor

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Automatic light-intensity control

Boots – shoes – and leggings
Patent

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Power relay or switch contact tester

Electricity: measuring and testing – Electromechanical switching device – Relay
Reexamination Certificate

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Redundant power system with no latent single failure point

Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate

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Profile ID: LFUS-PAI-P-332586

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