Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805885 | Sinuous spring | David J. Gingerich, William H. Rose, David T. Shaffer | 1989-02-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805885 | Sinuous spring | David J. Gingerich, William H. Rose, David T. Shaffer | 1989-02-21 |