(19)
(11)
EP 0 256 006 A1
(12)
(43)
Date of publication:
24.02.1988
Bulletin 1988/08
(21)
Application number:
86901608.0
(22)
Date of filing:
10.02.1986
(51)
International Patent Classification (IPC):
F24D
3/
08
( . )
(86)
International application number:
PCT/US1986/000291
(87)
International publication number:
WO 1987/004781
(
13.08.1987
Gazette 1987/18)
(84)
Designated Contracting States:
BE FR GB IT
(30)
Priority:
06.02.1986
US 19860826628
(71)
Applicant:
LAUDERDALE, Robert J.
Hayward, CA 94545 (US)
(72)
Inventor:
LAUDERDALE, Robert J.
Hayward, CA 94545 (US)
(54)
HEATING EXCHANGE FOR POTABLE WATER