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3D navigation system using complementary head-mounted and...

Optics: measuring and testing – Angle measuring or angular axial alignment – Relative attitude indication along 3 axes with photodetection
Reexamination Certificate

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3D scanner and method for measuring heights and angles of...

Optics: measuring and testing – Shape or surface configuration
Reexamination Certificate

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4-Wheel alignment method and apparatus

Optics: measuring and testing – Angle measuring or angular axial alignment – With screen
Patent

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4.pi. laser Doppler anemometer (LDA) for measuring the velocitie

Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Patent

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4Pi microscope

Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate

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A fiber optic device for measuring liquids which are drawn into

Optics: measuring and testing – For light transmission or absorption – Of fluent material
Patent

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A remotely controllable position indicator system

Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent

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Abbe refractometer

Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent

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Aberration mark and method for estimating overlay error and...

Optics: measuring and testing – By alignment in lateral direction – With light detector
Reexamination Certificate

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Aberration measuring apparatus comprising wavelength...

Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate

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Aberration measuring apparatus for an optical system...

Optics: measuring and testing – By light interference – Having wavefront division
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ABERRATION MEASURING APPARATUS, ABERRATION MEASURING METHOD,...

Optics: measuring and testing – Lens or reflective image former testing
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Aberration measuring method

Optics: measuring and testing – Lens or reflective image former testing – For optical transfer function
Patent

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Aberration measuring method for projection optical system...

Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate

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Aberration measuring method of projection optical system

Optics: measuring and testing – Lens or reflective image former testing
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Aberration measuring method, aberration measuring system and...

Optics: measuring and testing – Lens or reflective image former testing
Reexamination Certificate

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Abnormality sensing device for gas-insulated electric apparatus

Optics: measuring and testing – For light transmission or absorption – Of fluent material
Patent

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Absolute calibration of optical flats

Optics: measuring and testing – By light interference – Having wavefront division
Reexamination Certificate

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Absolute distance measurement method and system using...

Optics: measuring and testing – By light interference – Having light beams of different frequencies
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Absolute distance measuring device

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