Document evandLrDdpa3qayjpZ22jwbBe

BROOKES & RTIN CHARTERED PATENT AQENTS TRADE MARK AGENTS EUROPEAN PATENT ATTORNEYS RICHARD C. MARTIN, M.A.C*MT*a. DAVID C. WOODCRAFT, B.S<,,(Cme k ) ERIC E. BARNARD, C-En q .,M.1-C.E-,C. Dip. A.F. JOHN F. SYMONDS, LL.H.Lo n o -,SOLICITOR JOHN H. BLAKE, B.Sc .,<Ch c m.) HUGH R. WRIGHT, ma o w m. PETER C. SANDERS, B.3*. Rec eiv ed MAR 3 0 7990 DONALD J. ATTFIELD, 0.3*. C.Ch c m. m.r .s .c .i a s s is t c d t : '""""" PATENT RECORDS TIMOTHY M.A- RICKARD. S.Be. Ph D. GRAHAM F. MATTHEWS, B-A.,C*e n o .f .i.e .e . (CONSULTANT) CENTER H. NICHOLAS MATTHEWS, M.thAT. T.M.A.^CONSULTANT) GEOFFREY E. BROOME (c o n s u l t a n t ) orpice Ma^a o c * - A. J. JELLY Ac c o u n t s -Mr s C. OLSIHIA J Mr. David J. Gould E.I. DU PONT DE NEMOURS AND COMPANY Legal Department, Patent Records Center 1007 Market Street Wilmington, Delaware 19898 U.S.A. TELEX 267541 TELEPHONES (Ol) 242 9631 f a c s imil e (OO 831 0586 LDX 318 HIGH HOLBORN HOUSE 52/54, HIGH HOLBORN LONDON, WC1V 6SE OUR REF DCW/VSW YOUR REF 21 March 1990 Dear David, / European Patent Application No 87 303 681.8 Your reference : CH-1371_________ Referring to my letter of 15 February 1990, reporting a further official action in the above matter, I have obtained a precautionary two months extension to 8 June 1990. I look forward to receiving your instructions regarding the proposed response to the official action. Yours sincerely. (Zj U~-^ DAVlP^CVwOODCRAFT TUNBRIDGE WELLS: I BOYNE PARK, TUNBRIDGE WELLS, KENT, TW4 BEL. TEL.(0892) 610600 TELEX S57078 FACSIMILE (OB92) 510666 BIRMINGHAM: PRUDENTIAL BUILDINGS, S ST. PHILIPS PLACE. BIRMINGHAM, B3 2AF. TEL. (021) 238 6282 TELEX 335381 FACSIMILE (OSl) 2001473 MUNICH: >5 ZWEIBRUCKENSTRASSE, 8000 MUNICH 22. TEL. [06 9) 22 20 IO N 30961