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Etsuji Natori
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Shinjuku, JP
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last 30 patents
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Patent Grant
Weathering test method and sample holder used therein
Patent number
5,305,634
Issue date
Apr 26, 1994
Suga Test Instruments Co. Ltd.
Shigeru Suga
G01 - MEASURING TESTING
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Patent Grant
Light fastness/weather resistance accelerated test machine with an...
Patent number
4,704,903
Issue date
Nov 10, 1987
Suga Test Instruments Co., Ltd.
Shigeru Suga
G01 - MEASURING TESTING