Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599898 | Method and apparatus for testing ball striking rackets | — | 1986-07-15 |
| 4287388 | Drive-in theatre sound distribution system | Margaret Beer | 1981-09-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599898 | Method and apparatus for testing ball striking rackets | — | 1986-07-15 |
| 4287388 | Drive-in theatre sound distribution system | Margaret Beer | 1981-09-01 |