Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624522 | Method for applying granules to strip asphaltic roofing material to form variegated shingles | Roger W. Smith | 1997-04-29 |
| 5599581 | Method for pneumatically controlling discharge of particulate material | Charles A. Burton, Douglas E. Boyd | 1997-02-04 |