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Dietmar Berkhan

OEOtis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #3,940,385 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4875558 Safety brake for escalators Martin Mehlert 1989-10-24

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