Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4974879 | Pass-through tube for pressurized chamber | Stephen W. Berch | 1990-12-04 |
| 4820280 | Pass-through tube for presurized chamber | Stephen W. Berch | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4974879 | Pass-through tube for pressurized chamber | Stephen W. Berch | 1990-12-04 |
| 4820280 | Pass-through tube for presurized chamber | Stephen W. Berch | 1989-04-11 |