4. Photography and optical equipment
  5. Photographic accessory

David G. Perkins

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Compact imaging instrument system

Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate

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Compact imaging instrument system

Surgery – Endoscope – Having imaging and illumination means
Patent

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Compact ocular measuring system

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent

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Digital camera adapter

Photography and optical equipment – Photographic accessory
Patent

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Filter apparatus for retinoscope

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent

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Profile ID: LFUS-PAI-P-683141

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