(19)

(11)

EP 0 126 067 A1

(12)

(43) Date of publication: 28.11.1984 Bulletin 1984/48 (21) Application number: 83900221.0 (22) Date of filing: 19.11.1982

(51) International Patent Classification (IPC):  G09B 7/ 04( . ) (86) International application number: PCT/US1982/001628 (87) International publication number: WO 1984/002217 (07.06.1984 Gazette 1984/14)

(84) Designated Contracting States: AT DE FR GB SE (71) Applicant: WEYERHAEUSER COMPANY Tacoma, WA 98477 (US)	(72) Inventors: CHI, Uli, Han-Hsiang Kent, WA 98013 (US) LEMBERSKY, Mark, Raphael Seattle, WA 98166 (US)