๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Bearing equipment for vacuum devices


Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
83 KB
Volume
42
Category
Article
ISSN
0042-207X

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## Patents Piston ring with a multilayer assembly Applicant: Federal-Mogul Burscheid GmbH, Germany This invention relates to a piston ring with improved running-in and wear properties and to the production method employed. A series of layers are deposited on the bearing surface of the piston ring