Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6253512 | Method of applying tiles to a roof | Thomas K. Thompson, Frank R. Wilgus, Norman L. Gansmiller, Robert T. Fell, Jr. | 2001-07-03 |
| 6095082 | Apparatus for applying granules to an asphalt coated sheet to form a pattern having inner and outer portions | James S. Belt, Frank R. Wilgus | 2000-08-01 |
| D422719 | Tab portion of a roofing shingle | James S. Belt, Frank R. Wilgus | 2000-04-11 |
| 5795622 | Method of rotating or oscillating a flow of granules to form a pattern on an asphalt coated sheet | James S. Belt, Frank R. Wilgus | 1998-08-18 |
| 5776541 | Method and apparatus for forming an irregular pattern of granules on an asphalt coated sheet | James S. Belt, Frank R. Wilgus | 1998-07-07 |
| 5766678 | Method and apparatus for applying granules to an asphalt coated sheet to form a pattern having inner and outer portions | James S. Belt, Frank R. Wilgus | 1998-06-16 |
| 5709259 | Multiple section modular door and joint structure | Richard Lewis, Bobby G. Bailey, Alan R. Leist, Frank R. Wilgus | 1998-01-20 |
| D379672 | Tab portion of a roof shingle | Glenn D. Lamb, Carla A. Miller | 1997-06-03 |