4. Boots, shoes, and leggings

John W. Fletcher

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Non-contacting range sensing and control device

Boots – shoes – and leggings
Patent

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Position sensing system for surveying and grading

Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent

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Power monitor

Electricity: battery or capacitor charging or discharging – Battery or cell discharging
Reexamination Certificate

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Universal optical adapter for a three dimensional...

Earth working – Automatic power control – Land leveller type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-673520

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