Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9449590 | Low frequency audio sound effects in model railroading | Frederick E. Severson | 2016-09-20 |
| 4837066 | Foldable rigidified textile panels | Scott C. Billings | 1989-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9449590 | Low frequency audio sound effects in model railroading | Frederick E. Severson | 2016-09-20 |
| 4837066 | Foldable rigidified textile panels | Scott C. Billings | 1989-06-06 |