Issued Patents All Time
Showing 101–105 of 105 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321493 | Systems and methods for connecting skylight components | David Windsor Rillie, Joseph Prenn, Philip Edward Warren, Christian P. Stevens | 2001-11-27 |
| 6219977 | Tubular skylight with round-to-square adaptor | Christian P. Stevens, Joseph Prenn | 2001-04-24 |
| 6035593 | Tubular skylight with snap assembly and expansion spacer | David Windsor Rillie, Joseph Prenn, Christian P. Stevens | 2000-03-14 |
| 5896713 | Tubular skylight with vertically adjustable tube and improved roof cover seal | David Windsor Rillie, Joseph Prenn, Christian P. Stevens | 1999-04-27 |
| 5896712 | Light-collecting skylight cover | — | 1999-04-27 |