4. Optical: systems and elements
  5. Deflection using a moving element
  6. Using a periodically moving element

D. Richard Schafer

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Elevator car position sensing system

Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Reexamination Certificate

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Retroreflective elevator hoistway position sensor

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent

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Profile ID: LFUS-PAI-P-369507

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