(19)

(11)

EP 0 394 403 A1

(12)

(43) Date of publication: 31.10.1990 Bulletin 1990/44 (21) Application number: 89911339.0 (22) Date of filing: 25.09.1989

(51) International Patent Classification (IPC):  A47L 9/ 14( . ) B01D 46/ 02( . ) (86) International application number: PCT/US1989/004159 (87) International publication number: WO 1990/003214 (05.04.1990 Gazette 1990/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 26.09.1988 US 19880249311 (71) Applicant: THE SCOTT FETZER COMPANY Westlake OH 44145 (US)	(72) Inventors: LACKNER, John, R. Westlake, OH 44145 (US) GRZYWNA, Stanley, E. Elyria, OH 44035 (US) (74) Representative: Fisher, Bernard  Raworth, Moss & Cook 36 Sydenham Road Croydon Surrey CR0 2EF Croydon Surrey CR0 2EF (GB)