Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7464742 | Raising and lowering mechanism for blinds | Nicolaas Dekker, Jan Pieter Wetsema | 2008-12-16 |
| 6119755 | Support structure for an architectural covering | — | 2000-09-19 |
| 6085823 | Covering assembly for an architectural opening | — | 2000-07-11 |
| 6059004 | Window blind or shade | — | 2000-05-09 |
| 5390721 | Operating mechanism for a blind or shielding device | Dirk A. Ploeg | 1995-02-21 |
| 4974657 | Tape spacer | — | 1990-12-04 |
| 4928744 | Clutch for a vertical louvre blind | — | 1990-05-29 |
| 4865108 | Frame for a retractable blind | Petrus J. Hennequin | 1989-09-12 |
| 4807683 | Retractable screen | Petrus J. Hennequin | 1989-02-28 |
| 4802644 | Blind headrail bracket | — | 1989-02-07 |
| 4648436 | Vertical louvre blind and parts therefor | — | 1987-03-10 |
| 4529025 | Vane pocket cover for blind | — | 1985-07-16 |
| 4462452 | Slat apparatus for roof construction | — | 1984-07-31 |
| 4381811 | Support carrier for the drive shaft of a vertical venetian blind | Kurt H. Frentzel | 1983-05-03 |
| 4335775 | Rotatable louver holder for louvered vertical venetian blind | Kurt H. Frentzel | 1982-06-22 |
| 4332288 | Pull carrier for vertically louvered venetian blind | Kurt H. Frentzel | 1982-06-01 |
| 4306608 | Louver carrier for louver of a vertical venetian blind | Kurt H. Frentzel | 1981-12-22 |