Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9403400 | Modular portable writing and projection system having variable curvature | Michael McManus, Stephen Spencer, John Crowley, Joseph Ballay | 2016-08-02 |
| 8596600 | Collaborative panel system | Stephen Spencer, Joseph Ballay, David A. Bishop, John Crowley | 2013-12-03 |
| 5456471 | Golf practice apparatus and fabricating process | — | 1995-10-10 |
| 5356147 | Golf practice device | — | 1994-10-18 |
| 4804088 | Assembly of collated nails for automatic nailers | — | 1989-02-14 |
| 4775089 | Impact nailing and dimpling apparatus | — | 1988-10-04 |
| 4666074 | Impact nailing and dimpling apparatus | — | 1987-05-19 |