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Roy R. Jeffrey, Jr.

Texas: #73,555 of 125,132 inventorsTop 60%
Overall (All Time): #3,873,145 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5003941 Engine heating unit John Devoss 1991-04-02

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Syuichi Yoneyama1