Ian M. Threlfall

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Wigan, GB

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Patents Grantslast 30 patents

Information Patent Grant
Process for manufacturing photochromic articles
- Patent number 4,851,471
- Issue date Jul 25, 1989
- Pilkington Brothers P.L.C.
- William R. Maltman
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...