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
Wear Reduction Systems for Coal-Fueled Diesel Engines – Part I: The Basics of Powder LubricationJanuary 1, 1993
