EP0228569A1 - Anordnung zur Wärmerückgewinnung …
EP0228569A1 EP19860116348 EP86116348A EP0228569A1 EP 0228569 A1 EP0228569 A1 EP 0228569A1 EP 19860116348 EP19860116348 EP 19860116348 EP 86116348 A EP86116348 A EP 86116348A EP 0228569 A1 EP0228569 A1 EP 0228569A1 Authority EP European Patent Office Prior art keywords heat exchanger pipe characterized glass flue gas Prior art date 1985-12-05 Legal status …
