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James O. Gray — 1 Patent

Rayland, OH: #4 of 8 inventorsTop 50%

Ohio: #42,657 of 73,341 inventorsTop 60%

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1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D301687	Mine roof support plate	Bruce A. Cassidy	1989-06-20