Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928616 | Construction transporation system | Paul A. Robishaw | 1990-05-29 |
| 4890959 | Transportation and construction method | Paul A. Robishaw | 1990-01-02 |
| 4811681 | Construction transportation system | Paul A. Robishaw | 1989-03-14 |
| 4695184 | Locks for construction components | Paul A. Robishaw | 1987-09-22 |
| 4687379 | Method and apparatus for constructing elevated structures | — | 1987-08-18 |
| 4647257 | Method and apparatus for constructing elevated structures | — | 1987-03-03 |
| 4610215 | Construction components with improved locking system | Paul A. Robishaw | 1986-09-09 |