Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991725 | Compact storage system | John H. Welsch, John J. Chapko, Robert J. Cohn, Daniel C. Dubin | 1991-02-12 |
| 4509805 | Enclosed shelving | John H. Welsch, John J. Chapko | 1985-04-09 |
| 4385781 | Carrier for printed circuit boards | John H. Welsch | 1983-05-31 |