4. Illumination
  5. Revolving

William A. Parkyn, Jr.

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Apparatus and method for use in fulfilling illumination...

Optical: systems and elements – Lens – Including a nonspherical surface
Reexamination Certificate

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Auxiliary lens to modify the output flux distribution of a TIR l

Stoves and furnaces – Solar heat collector – With concentrating lens
Patent

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Beam-forming lens with internal cavity that prevents front losse

Optical: systems and elements – Lens – Including a nonspherical surface
Patent

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Circumferentially emitting luminaires and lens-elements...

Optical: systems and elements – Lens – With viewed object or viewed field illumination
Reexamination Certificate

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Collimating TIR lens devices employing fluorescent light sources

Illumination – Light source and modifier – Fluorescent type
Patent

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Profile ID: LFUS-PAI-P-177745

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