(19)

(11)

EP 0 582 659 A1

(12)

(43) Date of publication: 16.02.1994 Bulletin 1994/07 (21) Application number: 92911541.0 (22) Date of filing: 29.04.1992

(51) International Patent Classification (IPC):  G09F 3/ 20( . ) (86) International application number: PCT/US1992/003538 (87) International publication number: WO 1992/020056 (12.11.1992 Gazette 1992/28)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 01.05.1991 NL 19910000750 01.05.1991 NL 19910000751 (71) Applicant: BOSTON METAL PRODUCTS CORP. Medford, MA 02155 (US)	(72) Inventors: RUBIN, Richard, J. York Harbor, ME 03911 (US) MANNING, Joseph, W. Peabody, MA 01960 (US) HUTSON, Esther, D. Medford, MA 02155 (US) OUDE KEMPERS, Johan, Hendrik, Marinus NL-3743 AJ Baarn (NL) EVERAARTS, Judith NL-1073 LW Amsterdam (NL) (74) Representative: Sajda, Wolf E., Dipl.-Phys., et al  MEISSNER, BOLTE & PARTNER Widenmayerstrasse 48 D-80538 München D-80538 München (DE)