| (84) |
Designated Contracting States: |
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BE CH DE FR GB IT LI NL SE |
| (30) |
Priority: |
20.06.1988 US 19880209249
|
| (71) |
Applicant: PPG INDUSTRIES, INC. |
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Pittsburgh Pennsylvania 15272 (US) |
|
| (72) |
Inventors: |
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- TANG, Robert, H.
Norton, OH 44203 (US)
- CHAKRABARTI, Paritosh, M.
Pittsburgh, PA 15241 (US)
|
| (74) |
Representative: Sternagel, Hans-Günther, Dr., et al |
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Patentanwälte Dr. Michael Hann Dr. H.-G. Sternagel Sander Aue 30 D-51465 Bergisch Gladbach D-51465 Bergisch Gladbach (DE) |
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