Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6002138 | Hollow covering device for lightwave or radiant energy systems | David F. Steed, William Crandall | 1999-12-14 |
| D388088 | Hollow cover for a lightwave source | William Crandall | 1997-12-23 |