Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357876 | Portable hinged riser | John H. Kniefel, Leslie R. Abraham, Frank C. Krumholz | 1994-10-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357876 | Portable hinged riser | John H. Kniefel, Leslie R. Abraham, Frank C. Krumholz | 1994-10-25 |