Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5916151 | Apparatus for dilating a body cavity | — | 1999-06-29 |
| 5103932 | Security system for an environment | Niels K. Hansen | 1992-04-14 |
| 5083509 | Compaction device | Niels K. Hansen, Susanne K. Watkins | 1992-01-28 |
| D317787 | Mathematical aid | William A. Davidson, Silvia Davidson | 1991-06-25 |