| 0276415 | ||||
| 1159869 | ||||
| 1398270 | Electrode for electrical water-level-indicating apparatus and other electrical apparatus | |||
| 1594814 | Rattery indicator | |||
| 1683362 | Fluid-level indicator and leading-in arrangement for electrodes in hot high-pressurerooms | |||
| 1807781 | ||||
| 2073268 | Low water cut-out | |||
| 2083916 | Spark plug | |||
| 2264816 | Bushing | |||
| 2329961 | Apparatus for electrolytic protection of vessels from corrosion | |||
| 2361215 | Sealed cable entrance | |||
| 2400364 | Spark plug construction |
| DE375877C |