| 2194444 | Fused salt electrolysis cell | |||
| 2194443 | Anode for electrolytic cells | |||
| 2193323 | Manufacture of hyposulphites | |||
| 2110487 | Electrical etching machine | |||
| 2056184 | Electrolysis of fused salts | |||
| 2034458 | Process and apparatus | |||
| 1888118 | Production of fluorine | |||
| 1074988 | N/A | |||
| 0692688 | N/A | |||
| 0563972 | N/A |
| CH173725A |