Document Vjk37wqMNJM34BLDXxRmvLQaZ

,2 1 181,579 2 the method as claimed in any one of claims 5 to 9. 11. An exhaust pipe as described with, reference to and as shown in the accom5 panying drawing. 12. The method of sound insulating an exhaust pipe as described with reference to the accompanying drawing. 13. A motor vehicle having an internal'. combustion engine fitted with an exhaust 10 pipe as claimed in any one of claims 1 to 4, 10 or 11. M. Q DOBBS, Chartered Patent Agent Printed for Her Majesty's Stationery Office by Burgess & Son (Abingdon), Ltd,--1970. Published at The Patent Office, 25 Southampton Buildings, London, W.C.2, from which copies may be obtained.