Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996740 | Door closer adapter/replacement assembly | Robert Norman Hales, Erwin J. Hales, III | 1991-03-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996740 | Door closer adapter/replacement assembly | Robert Norman Hales, Erwin J. Hales, III | 1991-03-05 |