Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827770 | Sight glass with inner surface wiper | Ronald S. Schwartz, John K. Kish, Jeffery J. Jellum | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827770 | Sight glass with inner surface wiper | Ronald S. Schwartz, John K. Kish, Jeffery J. Jellum | 1989-05-09 |