(19)

(11)

EP 0 085 097 A1

(12)

(43) Date of publication: 10.08.1983 Bulletin 1983/32 (21) Application number: 82902659.0 (22) Date of filing: 30.07.1982

(51) International Patent Classification (IPC):  E04B 7/ 20( . ) E04D 3/ 18( . ) (86) International application number: PCT/US1982/001037 (87) International publication number: WO 1983/000519 (17.02.1983 Gazette 1983/05)

(84) Designated Contracting States: BE CH DE FR GB LI LU NL SE (30) Priority: 03.08.1981 US 19810289327 (71) Applicant: BLANDIN WOOD PRODUCTS COMPANY Grand Rapids, MN 55744 (US)	(72) Inventor: HEDQUIST, Dale Carl Deer River, MN 55636 (US)