EP 0909934 A3 20000531 - Method for cleaning water heating elements, in particular armoured resistance elements
Title (en)
Method for cleaning water heating elements, in particular armoured resistance elements
Title (de)
Verfahren zur Reinigung von Heizelementen für Wasserheizer, insbesondere von geschützten Widerstandselementen
Title (fr)
Méthode de nettoyage d'éléments chauffants pour chauffe-eau, en particulier des éléments de résistance blindées
Publication
Application
Priority
IT VE970045 A 19971017
Abstract (en)
[origin: EP0909934A2] A method for cleaning water heating elements, in particular armoured resistance elements (4), characterised in that the cleaning is carried out by mechanical abrasion. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
F24H 9/0042 (2013.01); F28G 3/04 (2013.01)
Citation (search report)
- [XY] DE 3907852 A1 19890921 - SICAL AB [SE]
- [A] FR 2655886 A1 19910621 - STEIN INDUSTRIE [FR]
- [A] DE 204479 C
- [Y] DATABASE WPI Section Ch Week 199330, Derwent World Patents Index; Class M14, AN 1993-239419, XP002134579
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0909934 A2 19990421; EP 0909934 A3 20000531; IT 1297494 B1 19991217; IT VE970045 A0 19971017; IT VE970045 A1 19990417
DOCDB simple family (application)
EP 98119206 A 19981012; IT VE970045 A 19971017