Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139379 | Roofing fastener, improved screw therefor, and improved washer therefor | Syed R. Hasan, Craig A. Hindman, Juergen O. Rathgeber, John R. Beach | 1992-08-18 |
| 5042142 | Washer-dispensing and fastener-driving machine | John R. Beach, Syed R. Hasan, Donald W. Noren, Craig A. Hindman | 1991-08-27 |
| 4890968 | Stackable roofing washer | John R. Beach, Syed R. Hasan, Donald W. Noren, Craig A. Hindman | 1990-01-02 |