Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672443 | Battery sealing cap | Timothy L. Salisbury, Charles A. Draheim | 1997-09-30 |
| 5656395 | Metal-air cathode and cell having a hardened current collecting substrate | Robert B. Dopp, John Edward Oltman | 1997-08-12 |
| 5650246 | Metal-air cathode and cell having a hardened current collecting substrate | Robert B. Dopp, John Edward Oltman | 1997-07-22 |
| 5637117 | Method of hardening a metal current collecting strip of an air cathode and a method of making a button type battery | Robert B. Dopp, John Edward Oltman | 1997-06-10 |