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Patent applications and USPTO patent grants for Kempf; John A..The latest application filed is for "lockout valve".
Patent | Date |
---|---|
Lockout Valve App 20090212250 - Brice; Lawrence E. ;   et al. | 2009-08-27 |
Lockout valve Grant 6,893,002 - Brice , et al. May 17, 2 | 2005-05-17 |
Lockout valve App 20040079916 - Brice, Lawrence E. ;   et al. | 2004-04-29 |
Pneumatic pilot-operated control valve assembly Grant 6,082,406 - Williamson, Jr. , et al. July 4, 2 | 2000-07-04 |
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