Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4663906 | Removable concealing wall trim | — | 1987-05-12 |
| 4569172 | Interior corner construction for wallboard, ceiling and partition panel assemblies, and backer clips therefor | — | 1986-02-11 |
| 4553363 | Outside wallboard corner construction and edging member for said corners | — | 1985-11-19 |
| 4467578 | Concealable wallboard fastener and walls and partitions assembled with the aid thereof | — | 1984-08-28 |
| 4467579 | Readily separable positively locking panel fasteners | — | 1984-08-28 |
| 4333286 | Walls and partitions and concealed fasteners for assembly thereof | — | 1982-06-08 |
| 4296580 | Wall constructed from panels held in position with the aid of concealed fasteners and concealable fasteners for use in assembling such wall | — | 1981-10-27 |
| 4281494 | Concealable wallboard fasteners and walls assembled therewith | — | 1981-08-04 |
| 4221095 | Wall constructed from wallboard held together with concealed fasteners | — | 1980-09-09 |
| 4194336 | Concealable retaining clip for wallboards | — | 1980-03-25 |