DR

Donald M. Roberts

BH Bayer Healthcare: 2 patents #3,312 of 8,007Top 45%
Overall (All Time): #1,651,263 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5423297 Two stage rotary vaned internal combustion engine 1995-06-13
4718577 Suspendable dispenser pack container for flowable substances, such as liquids, pastes, powder and fine granules David B. Morris, Andrew C. Rollett, Christopher D. Emmerson 1988-01-12
4714177 Device for the metering of a chemical, particularly for seed treatment David B. Morris, Andrew C. Rollett 1987-12-22