Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8371081 | Corner guard | Roger W. Lehrkamp | 2013-02-12 |
| D661533 | Bendable track for suspension of curtains | Roger W. Lehrkamp | 2012-06-12 |
| 8070137 | Handrail assembly | — | 2011-12-06 |
| 6854406 | Autonomous surface watercraft | Miguel Cardoza, Sarah Benedict, Anne Mayoral, J. Clark Hughes, Donald Tucker | 2005-02-15 |
| 6427401 | Multi-colored co-extruded corner guard | — | 2002-08-06 |
| 6354049 | Co-extruded vinyl corner guard assembly | — | 2002-03-12 |
| 6263630 | Multi-colored co-extruded corner guard | — | 2001-07-24 |
| 5743064 | Protective wall rail having decorative vinyl strip | — | 1998-04-28 |