(19)

(11)

EP 0 579 756 A1

(12)

(43) Date of publication: 26.01.1994 Bulletin 1994/04 (21) Application number: 92910857.0 (22) Date of filing: 09.03.1992

(51) International Patent Classification (IPC):  B26B 21/ 60( . ) C23C 16/ 30( . ) C23C 14/ 06( . ) (86) International application number: PCT/US1992/001946 (87) International publication number: WO 1992/017323 (15.10.1992 Gazette 1992/26)

(84) Designated Contracting States: DE GB (30) Priority: 05.04.1991 US 19910680957 (71) Applicant: WARNER-LAMBERT COMPANY Morris Plains New Jersey 07950 (US)	(72) Inventor: BALISTEE, Brian G. Stratford, CT 06497 (US) (74) Representative: Coxon, Philip, et al  Eric Potter & Clarkson St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)