4. Geometrical instruments
  5. Straight-line light ray type

Armin Spiegel

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Device for aligning a geodetic instrument over a defined positio

Geometrical instruments – Straight-line light ray type
Patent

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Device of and method for visual fixation of signal markers...

Geometrical instruments – Straight-line light ray type – Rod or target
Reexamination Certificate

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Electro-optical hand-held distance measuring instrument

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

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Rotational constructional laser

Coherent light generators – Particular beam control device
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1811969

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