File:Public Institutions patent activity in titanium dioxide production.png
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![File:Public Institutions patent activity in titanium dioxide production.png](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Public_Institutions_patent_activity_in_titanium_dioxide_production.png/503px-Public_Institutions_patent_activity_in_titanium_dioxide_production.png?20231113150736)
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