Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6405506 | Door frame for metal buildings | — | 2002-06-18 |
| 6148572 | Wall construction | — | 2000-11-21 |
| 6079181 | Wall construction | — | 2000-06-27 |
| 5704171 | Door frame installing fixture | Donald L. King | 1998-01-06 |
| 5669198 | Anchor for metal door frame | — | 1997-09-23 |
| 5619823 | Pre-finished metal door frame | Donald L. King | 1997-04-15 |
| 5581953 | Metal frame assembly | — | 1996-12-10 |
| 5323579 | Door window glass and frame assembly | — | 1994-06-28 |
| 4547930 | Hinge preparation assembly for a steel door | Donald L. King, Ernest D. Schwarz, II | 1985-10-22 |
| D273937 | Strike plate or similar article | — | 1984-05-22 |
| 4255902 | Weather sealing assembly for doors | — | 1981-03-17 |
| 4213317 | Blank filler plate for lock edge cut-out | — | 1980-07-22 |