Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37090 | Check valve | John Barlow, Jr. | 2001-03-13 |
| 5291916 | Check valve | John Barlow, Jr. | 1994-03-08 |
| 4756767 | Method of removing sealant material from window glazing panel | Natvar H. Soni, Denzil Abney | 1988-07-12 |