(19)

(11)

EP 0 286 653 A1

(12)

(43) Date of publication: 19.10.1988 Bulletin 1988/42 (21) Application number: 87906328.0 (22) Date of filing: 28.08.1987

(51) International Patent Classification (IPC):  G01N 21/ 78( . ) G01N 35/ 08( . ) G01N 33/ 03( . ) (86) International application number: PCT/US1987/002117 (87) International publication number: WO 1988/001741 (10.03.1988 Gazette 1988/06)

(84) Designated Contracting States: FR GB IT (30) Priority: 02.09.1986 US 19860902646 (71) Applicant: FIATRON SYSTEMS, INC. Oconomowoc, WI 53066 (US)	(72) Inventors: SHICK, Karl, G. Milwaukee, WI 53217 (US) KARGES, Paul, M. Milwaukee, WI 53218 (US) LANG, Gary, A. Brookfield, WI 53005 (US) UHEN, David, A. Palmyra, WI 53156 (US) (74) Representative: Patentanwälte Grünecker, Kinkeldey, Stockmair & Partner  Maximilianstrasse 58 D-80538 München D-80538 München (DE)