Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D718848 | Radial heat conductor | Sheldon Stewart Norberg, John Massa, Christopher Marquis, Felix Ming Han Chai | 2014-12-02 |
| 4683422 | Low voltage continuity tester | — | 1987-07-28 |