Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D331449 | Bellows valve | Ira Silverman | 1992-12-01 |
| 4995589 | Bellows valve | Ira Silverman | 1991-02-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D331449 | Bellows valve | Ira Silverman | 1992-12-01 |
| 4995589 | Bellows valve | Ira Silverman | 1991-02-26 |