Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5427448 | Method for mixing concrete using a cementitious material/liquid premixer | Donald J. Macaulay | 1995-06-27 |
| 5352035 | Concrete mixing system with cement/water premixer | Donald J. Macaulay | 1994-10-04 |