4. Transportation
  5. Watercraft or hull

Alvin R. Wirthlin

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Door operator with short stroke actuator

Movable or removable closures – With operator for movably mounted closure – Operator drives closure along guide
Patent

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Fluid level detector using thermoresistive sensor

Measuring and testing – Liquid level or depth gauge – Thermal type
Patent

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Optical translucency indicator for measurement of air filter dir

Optics: measuring and testing – With plural diverse test or art
Patent

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Personal watercraft

Transportation – Watercraft or hull
Patent

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Portable hand cleaning device

Baths – closets – sinks – and spittoons – Wash receptacles – With human body support
Patent

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Profile ID: LFUS-PAI-P-341564

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