Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 10696504 | Dock-lift trailer | Michael S. Vollmar | 2020-06-30 | |
| 10179712 | Towable dock-lift trailer | Michael S. Vollmar, Robert A. Johnson, Carl Eugene Barbour, Harley James Barbour, Michael Kocur | 2019-01-15 | |
| 8539767 | Exhaust treatment system for an internal combustion engine | Kimberly O'Kane, Chijou Wang | 2013-09-24 | $9,757,000 |
| 7178464 | Rail car door closer | — | 2007-02-20 | |
| D326059 | Level | — | 1992-05-12 | |
| 4964219 | Combination plumb/level instrument for a try square | — | 1990-10-23 | |
| 4874182 | Stroller apparatus for juvenile car seat | — | 1989-10-17 | |
| 4638997 | Combination toy and game | — | 1987-01-27 | |
| D285326 | Combined crane and trailer toy | — | 1986-08-26 |