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Taipei, TW
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last 30 patents
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Patent Grant
Sweeper type apparatus for clearing the deposition formed on the bo...
Patent number
4,744,897
Issue date
May 17, 1988
Johnson Yes
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Water filter
Patent number
4,666,601
Issue date
May 19, 1987
Johnson Yes
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL