(19)
(11) EP 0 513 027 A1

(12)

(43) Date of publication:
19.11.1992 Bulletin 1992/47

(21) Application number: 91901981.0

(22) Date of filing: 08.01.1991
(51) International Patent Classification (IPC): 
A01N 25/ 26( . )
(86) International application number:
PCT/US1991/000015
(87) International publication number:
WO 1991/010362 (25.07.1991 Gazette 1991/17)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30) Priority: 12.01.1990 US 19900464434

(71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Wilmington Delaware 19898 (US)

(72) Inventor:
  • TOCKER, Stanley
    Wilmington, DE 19803 (US)

(74) Representative: Hildyard, Edward Martin, et al 
Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway
London WC2B 6UZ
London WC2B 6UZ (GB)

   


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