Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4526510 | Double-walled centrifugal fan scroll and system of operation | Joseph Henry Hoffman | 1985-07-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4526510 | Double-walled centrifugal fan scroll and system of operation | Joseph Henry Hoffman | 1985-07-02 |