Improvements in filter for diesel electric locomotives. (Machine-translation by Google Translate, not legally binding)

摘要

Improvement in filter for diesel electrical locomotives characterized by having in an interior as filtering material, two or more layers of microporous paper pleated in a star shape, which may have the same porosity, or retaining microteas or porosities and different retaining micrajes and different (Machine-translation by Google Translate, not legally binding)