DD

Donald R. Howell, deceased

HR Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Natual Resources: 1 patents #251 of 906Top 30%
📍 New Waterford, CA: #2 of 3 inventorsTop 70%
Overall (All Time): #4,053,515 of 4,157,543Top 100%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4389922 Reversing low pressure lubricating valve Ronald Tatters, John E. Dolman 1983-06-28