(19)

(11)

EP 0 402 388 A1

(12)

(43) Date of publication: 19.12.1990 Bulletin 1990/51 (21) Application number: 89903002.0 (22) Date of filing: 27.02.1989

(51) International Patent Classification (IPC):  F16B 7/ 04( . ) E04B 1/ 58( . ) F16B 21/ 16( . ) F16L 37/ 12( . ) E04B 1/ 19( . ) F16B 7/ 00( . ) F16D 1/ 112( . ) (86) International application number: PCT/US1989/000784 (87) International publication number: WO 1989/008205 (08.09.1989 Gazette 1989/21)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 02.03.1988 US 19880162984 (71) Applicant: INTERLOCK STRUCTURES INTERNATIONAL, INC. Maple Grove, MN 55369 (US)	(72) Inventor: LANGE, Frederic, A. Osseo, MN 55369 (US) (74) Representative: Rostovanyi, Peter, et al  AWAPATENT AB, Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)