Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5569079 | Device for sampling grain | David W. Ryden, Jr. | 1996-10-29 |
| 4543681 | Remotely operated chimney cleaning apparatus | — | 1985-10-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5569079 | Device for sampling grain | David W. Ryden, Jr. | 1996-10-29 |
| 4543681 | Remotely operated chimney cleaning apparatus | — | 1985-10-01 |