| 摘要 |
387,575. Batteries. VEREINIGTE DEUTSCHE METALLWERKE AKT.- GES., ZWEIGNIEDERLASSUNG SœDDEUTSCHE METALLINDUSTRIE, 79, Geisseestrasse, Nuremberg, Germany. June 14, 1932, No. 16792. Convention date, Nov. 14, 1931. Drawings to Specification. [Class 53.] Zinc containers for dry batteries are made by extruding plates of rolled zinc at a temperature below 90‹ C., i.e. the lower recrystallization temperature of zinc. Containers so produced have rounded bottom edges and mirror-like inner and outer surfaces. |
