4. Data processing: measuring, calibrating, or testing
  5. Calibration or correction system
  6. Direction

Zhang-Yong Jian

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Adjusting method of a tilt meter

Data processing: measuring – calibrating – or testing – Calibration or correction system – Direction
Reexamination Certificate

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Laser tilt apparatus and the method thereof

Geometrical instruments – Straight-line light ray type – Level
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3017782

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