Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6080053 | Outside diameter finishing tool and method of making the same | Robert Marvin, Malcolm Owen | 2000-06-27 |
| 5846126 | Outside diameter finishing tool and method of making the same | Robert Marvin, Malcolm Owen | 1998-12-08 |
| 5564972 | Outside diameter finishing tool | Robert Marvin, Malcolm Owen | 1996-10-15 |
| 4720129 | Improved two piece security plate for a door | — | 1988-01-19 |
| 4629231 | Security plate for a door | — | 1986-12-16 |
| 4583776 | Double purpose security plate | — | 1986-04-22 |