Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D293546 | Torch | Roger D. Zwicker | 1988-01-05 |
| 4286620 | Combination torch and check valve assembly | — | 1981-09-01 |
| 4257443 | Check valve | — | 1981-03-24 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D293546 | Torch | Roger D. Zwicker | 1988-01-05 |
| 4286620 | Combination torch and check valve assembly | — | 1981-09-01 |
| 4257443 | Check valve | — | 1981-03-24 |