DE699596C
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Traffic mirror
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DE709081C
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Device for supplying the polishing agent to lens grinding machines
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DE697973C
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Optical system
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DE682091C
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Reflexless hand-held eye mirror
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DE689834C
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Circular vial
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DE682044C
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Mirror prism for inclined viewing
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DE709243C
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Optical system
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DE672062C
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TV home receiver, in which the image on the fluorescent screen of a cathode ray tube is designed on a projection surface
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DE673608C
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Lighting device for microscopes
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DE702102C
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Device for the photoelectric remote display of the position of the display means of a measuring device
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DE688345C
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Process for making small magnets
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DE711285C
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compass
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DE676497C
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Process for generating stereo images using polarized light
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DE691697C
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Converging lens with transparent support rim
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DE603323C
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Lighting device for microscopes
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DE582583C
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Light intercom
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DE576912C
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Optical arrangement to protect rooms, machines, etc. by means of a light or other beam
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DE584501C
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Transmitter for audio frequency modulated directed light and similar beams
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DE575102C
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Sighting device for headlights
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DE597354C
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Lens with variable focal length
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