4. Measuring and testing
  5. Navigation
  6. Take-off and landing monitors

Ari Lahteenmaki

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Arrangement for compensating for magnetic declination in an opti

Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive
Patent

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Face shield, incorporating a wrist watch display

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Floating or underwater type
Patent

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Navigation system for diving operations

Measuring and testing – Navigation – Take-off and landing monitors
Patent

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Profile ID: LFUS-PAI-P-893079

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