| 摘要 |
1336073 Convector space heaters RUNTAL HOLDING CO SA 5 May 1971 [11 May 1970] 13304/71 Heading F4S In a convector space heater which comprises spaced-apart vertical tubes 1 each enclosed within a corrugation in a plate 10 or 12 which is attached to the tubes and defines convection-air passages, the passages are formed either as shown in Fig. 1 by said plate 10 and a further corrugated plate 3 attached to the plate 10; or as shown in Fig. 2 by right-angled corrugations of the plate 12. |
