Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4747883 | Continuously flushed thermocouple assembly | John F. Krumwiede | 1988-05-31 |
| 4600425 | Bubbler with protective sleeve or fluid coolant jacket | John F. Krumwiede, William G. Hilliard | 1986-07-15 |