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Ronald A. Usmar

BP British Gas Plc: 2 patents #16 of 134Top 15%
Overall (All Time): #2,348,693 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4596146 Mounting John C. H. Geisow 1986-06-24
4202216 Ultrasonic testing Reginald B. Bull, Colin Duffill 1980-05-13