Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7676873 | Wrench and reamer tool | — | 2010-03-16 |
| 4455595 | Packaged add-on device for lead-type ballast and luminaire which incorporates such packaged add-on device | Joseph C. Engel, Richard Eric Hanson, Robert J. Spreadbury | 1984-06-19 |