(19)

(11)

EP 0 042 423 A1

(12)

(43) Date of publication: 30.12.1981 Bulletin 1981/52 (21) Application number: 81900322.0 (22) Date of filing: 23.12.1980

(51) International Patent Classification (IPC):  B32B 5/ 18( . ) E04D 13/ 16( . ) (86) International application number: PCT/US1980/001707 (87) International publication number: WO 1981/001816 (09.07.1981 Gazette 1981/16)

(84) Designated Contracting States: FR (30) Priority: 27.12.1979 US 19790107531 (71) Applicant: PARKER, Lawrence J Converse, TX 78104 (US)	(72) Inventor: PARKER, Lawrence J Converse, TX 78104 (US)