(19)

(11)

EP 0 954 775 A1

(12)

(43) Date of publication: 10.11.1999 Bulletin 1999/45 (21) Application number: 97919958.0 (22) Date of filing: 31.03.1997

(51) International Patent Classification (IPC):  G06F 1/ 16( . ) G06F 3/ 033( . ) G06F 1/ 20( . ) (86) International application number: PCT/US1997/005168 (87) International publication number: WO 1997/037293 (09.10.1997 Gazette 1997/43)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 02.04.1996 US 19960014580P (71) Applicant: Fieldworks, Inc. Eden Prairie, MN 55344 (US)	(72) Inventors: FRIGARD, Charles Mound, MN 55364 (US) HELGESON, Lonnie, J. Jordan, MN 55352 (US) SZYMBORSKI, Robert, C. Deephaven, MN 55391 (US) ALSETH, Steven, M. Cologne, MN 55322 (US) (74) Representative: Strehl Schübel-Hopf & Partner  Maximilianstrasse 54 80538 München 80538 München (DE)