HP

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PA Philipp Holzmann Ag: 1 patents #6 of 22Top 30%
Overall (All Time): #4,077,501 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4355453 Method of protecting the surfaces of concrete structures Walter Stiller 1982-10-26