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Johannes Wilhelmus TER Vrugt
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Eindhoven, NL
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last 30 patents
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Patent Grant
Low-pressure mercury vapour discharge lamp
Patent number
4,727,283
Issue date
Feb 23, 1988
U.S. Philips Corporation
Johannes T. C. van Kemenade
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Patent Grant
Electric gas discharge lamp having two superposed luminescent layers
Patent number
4,069,441
Issue date
Jan 17, 1978
U.S. Philips Corporation
Willem Lambertus Wanmaker
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...