Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4218140 | Light meter | Jerome E. Johnston, Lyle R. Middendorf | 1980-08-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4218140 | Light meter | Jerome E. Johnston, Lyle R. Middendorf | 1980-08-19 |