NO. 5,085,185 | Powder-Lubricant Piston Ring for Diesel Engines NO. 5,085,185 | Powder-Lubricant Piston Ring for Diesel Engines Details Date April 3, 2014 Category Patents
Friction and Wear of Silicon Nitride Lubricated by Humid Air, Water, Hexadecane and Hexadecane + 0.5% Stearic AcidJanuary 1, 1988
