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Priority to NL6500095ApriorityCriticalpatent/NL146941B/xx
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G02B5/126—Reflex reflectors including curved refracting surface
G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
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NL6500095A1965-01-061965-01-06Werkwijze voor het vervaardigen van een retroreflecterend oppervlak en voorwerp verkregen volgens deze werkwijze.
NL146941B
(nl)