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Douglas N. Datema

OEOtis Elevator: 1 patents #64 of 199Top 35%
Bettendorf, IA: #18 of 59 inventorsTop 35%
Iowa: #539 of 1,728 inventorsTop 35%
Overall (2024): #483,364 of 561,600Top 90%
1 Patents 2024

Issued Patents 2024

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11905721 Protective platform assembly for use during elevator installation Kurt J. Frei 2024-02-20

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