Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090053 | Dental device and method and also reference electrode for determining the state of a tooth crown or tooth bridge | Charles Ruetschi | 2000-07-18 |
| 4318967 | Long-life galvanic primary cell | — | 1982-03-09 |
| 4315977 | Mold for casting grid for tubular plates of a lead-acid battery and resulting casting | — | 1982-02-16 |
| 4209574 | Long-life alkaline primary cell having low water content | — | 1980-06-24 |
| 4192914 | Long-life alkaline primary battery | — | 1980-03-11 |