Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4256188 | Method and apparatus for drilling a hole in a body of ice and for the destruction of a body of ice | Robert Hopkins | 1981-03-17 |
| D255056 | Athletic protective shirt or similar article | — | 1980-05-27 |