Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4586489 | Semi-concentrating solar energy collector | Richard L. Weiher | 1986-05-06 |
| 4181627 | High fluorescent efficiency zinc oxide crystals and method of making same | Richard L. Weiher, Kjell I. Hagemark | 1980-01-01 |