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DW Dyckerhoff & Widmann: 1 patents #32 of 81Top 40%
Overall (All Time): #4,094,314 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4282036 Flowable concrete mixture Ulrich Finsterwalder, Klemens Finsterwalder, Kurt Koch 1981-08-04