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Melvyn P. Butler

📍 Derby, GB: #489 of 964 inventorsTop 55%
Overall (All Time): #4,075,248 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4347888 Method of making forms for investment casting and products produced therefrom 1982-09-07