Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939941 | Combined distance and diameter measuring apparatus for wheel balancing machine | Duncan R. Mackay, Allan C. Madden | 1990-07-10 |
| 4916350 | Sensor for detecting vibrations in a plane, particularly in a stringed musical instrument | Allan C. Madden, Robert G. Bennett, Jr., Duncan R. Mackay | 1990-04-10 |
| 4499768 | Cantilever support for an apparatus to determine the imbalance in a rotating object | Allan C. Madden, Robert A. Hoshida, Duncan R. Mackay | 1985-02-19 |