4. Optics: measuring and testing
  5. Refraction testing
  6. Prism engaging specimen

Esko Alasaarela

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Moisture indicator

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

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Procedure and device for facilitating audiovisual observation of

Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo sound pickup device
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Profile ID: LFUS-PAI-P-659760

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