BARRIER WITH INTERNAL DUCTS AND CONSTRUCTION METHOD

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EP 0 180 625 A1

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(43)	Date of publication:
	14.05.1986 Bulletin 1986/20

(21)	Application number: 85902374.0

(22)	Date of filing: 29.04.1985

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International Patent Classification (IPC):

E01F 9/ 06^{( . )}
B28B 7/ 28^{( . )}
E01C 11/ 22^{( . )}
E01F 9/ 093^{( . )}
E01F 15/ 08^{( . )}

B28B 1/ 44^{( . )}
B28B 21/ 86^{( . )}
E01F 1/ 00^{( . )}
E01F 15/ 00^{( . )}
E03F 3/ 04^{( . )}

(86)	International application number:
	PCT/US1985/000775

(87)	International publication number:
	WO 1985/005136 (21.11.1985 Gazette 1985/25)

(84)	Designated Contracting States:
	BE CH DE FR GB LI LU NL

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Priority:

07.05.1984 US 19840607429

(71)	Applicant: ASSOCIATED CONCRETE PRODUCTS, INC.
	Santa Ana California 92704 (US)

(72)	Inventor:
	HAHNE, Walter, B. Corona Del Mar, CA 92625 (US)

(74)	Representative: Sommerville, John Henry, et al
	SOMMERVILLE & RUSHTON 11 Holywell Hill St. Albans Hertfordshire, AL1 1EZ St. Albans Hertfordshire, AL1 1EZ (GB)

(54)	BARRIER WITH INTERNAL DUCTS AND CONSTRUCTION METHOD