| 摘要 |
474,595. Condensers. CHIFFEY, E. Feb. 26, 1937, No. 24966. Divided out of 473,482. [Class 37] A coating is formed on an impregnated condenser casing by applying a layer of powdered shellac or natural or artificial resin, and re-heating to cause the powder to fuse so as to form a substantially continuous covering. A second coating may be applied similarly but at a lower temperature. |
