Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842241 | Lightweight plastic concrete mold | John M. R. Fitzgerald | 1989-06-27 |
| 4817794 | Versatile multiple use shim product | — | 1989-04-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842241 | Lightweight plastic concrete mold | John M. R. Fitzgerald | 1989-06-27 |
| 4817794 | Versatile multiple use shim product | — | 1989-04-04 |