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Filing date
Publication date
Application filed by Otto Heinrich Fritz D VollbehrfiledCriticalOtto Heinrich Fritz D Vollbehr
Application grantedgrantedCritical
Publication of AT21834BpublicationCriticalpatent/AT21834B/en
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Gebrauch des Apparatos boi Tageslicht Sobwiorigkeiton nicht ontgognnstellt.
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Use of the apparatus with daylight is not subject to interruption.
Claims (1)
PATENT-ANSPRUCH :
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stellung durchleuchtet, so dass einerseits eine direkte Beobachtung derselben durch dxs Objektiv auch bei Nacht ermöglicht ist, andererseits das leichte Abtrennen des Lichtträgers die Benützung des Apparats bei Tageslicht nicht beeinträchtigt.
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PATENT CLAIM:
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position, so that, on the one hand, direct observation of the same through the dxs lens is also possible at night, and on the other hand, the easy detachment of the light carrier does not impair the use of the device in daylight.
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AT21834D1904-05-191904-05-19
Device for enlarging micrographic representations.
AT21834B
(en)