Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D611851 | Battery tester | David E. Zimmerman | 2010-03-16 |
| D569285 | Battery tester | David E. Zimmerman | 2008-05-20 |
| D515444 | Battery tester | David E. Zimmerman | 2006-02-21 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D611851 | Battery tester | David E. Zimmerman | 2010-03-16 |
| D569285 | Battery tester | David E. Zimmerman | 2008-05-20 |
| D515444 | Battery tester | David E. Zimmerman | 2006-02-21 |