Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4236272 | Hinge comprising a compression spring, which is adapted to balance the weight of a hinged leaf | Wilhelm Gronbach | 1980-12-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4236272 | Hinge comprising a compression spring, which is adapted to balance the weight of a hinged leaf | Wilhelm Gronbach | 1980-12-02 |