4. Geometrical instruments
  5. Indicator of direction of force traversing natural media
  6. Level or plumb, terrestrial gravitation responsive

Masaru Isono

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Automatic focusing means for an ophthalmoscopic instrument

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

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Clinometer

Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent

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Focus detecting device for opthalmologic instruments

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent

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Scanning and detecting optical device

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Profile ID: LFUS-PAI-P-992412

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