Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5879486 | Methods of manufacturing gypsum board and board made therefrom | John L. Philips | 1999-03-09 |
| 5718797 | Apparatus for manufacturing gypsum board | John L. Phillips | 1998-02-17 |