Inventor · disambiguated record

Leonard A. Duval

Also filed as: DUVAL LEONARD A

3 granted patents·44 citations·filing 1979–1984

71Inventor score

Technology areasB01D

Files withDUVAL LEONARD A3

Top patents by PatentIndex Score

3 records

0159US4288329AMethod and apparatus for cleaning fine waste material mixed with oil and waterDUVAL LEONARD A·Filed 1979·Granted Sep 8, 1981·20 cites·2 claims
0243US4406796AMethod and apparatus for cleaning fine waste material mixed with oil and waterDUVAL LEONARD A·Filed 1981·Granted Sep 27, 1983·13 cites·6 claims
0342US4696114AMethod and apparatus for the drying of solid materials by displacementDUVAL LEONARD A·Filed 1984·Granted Sep 29, 1987·11 cites·22 claims

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