Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823637 | Shingle with a rendered shadow design | David P. Aschenbeck | 2004-11-30 |
| 6790307 | Shingles with multiple blend drops and method of depositing granules onto a moving substrate | — | 2004-09-14 |
| 6748714 | Trilaminate shingles | — | 2004-06-15 |
| 6698151 | Shingle for optically simulating a tiled roof | — | 2004-03-02 |