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Patent applications and USPTO patent grants for Lahrman; John C..The latest application filed is for "piston ring with localized nitrided coating".
Patent | Date |
---|---|
Piston ring with localized nitrided coating Grant 8,986,465 - Lahrman March 24, 2 | 2015-03-24 |
Piston Ring With Localized Nitrided Coating App 20140197602 - Lahrman; John C. | 2014-07-17 |
Multi-rail piston ring Grant 8,403,334 - Lahrman March 26, 2 | 2013-03-26 |
Cooling gallery insert for a piston Grant 8,047,123 - Lahrman November 1, 2 | 2011-11-01 |
Piston ring Grant 7,997,185 - Lahrman , et al. August 16, 2 | 2011-08-16 |
Multi-rail Piston Ring App 20100171273 - LAHRMAN; JOHN C. | 2010-07-08 |
Cooling Gallery Insert For A Piston App 20090145295 - Lahrman; John C. | 2009-06-11 |
Piston Ring App 20080229922 - Lahrman; John C. ;   et al. | 2008-09-25 |
Piston assembly and method of manufacture Grant 7,017,914 - Sytsma , et al. March 28, 2 | 2006-03-28 |
Piston ring assembly Grant 5,794,941 - Lahrman August 18, 1 | 1998-08-18 |
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