Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9802101 | Apparatus and method for counting attempts in a sporting game | — | 2017-10-31 |
| 7641517 | Keyed socket and lamp base | Karl-Wilhelm Vogt, Markus Pieper, Albert M. Cavallaro, Roger B. Hunt, Jr., Dennis S. Holt | 2010-01-05 |
| 6240665 | Illuminated sign | Heinz K. Filzer | 2001-06-05 |
| D415304 | Undercabinet light fixture | — | 1999-10-12 |
| D392404 | Lamp | — | 1998-03-17 |
| D387267 | Wall plates | — | 1997-12-09 |
| D386272 | Lamp | — | 1997-11-11 |
| 5505904 | Air disinfection unit | Robert N. Haidinger, Heinz K. Filzer | 1996-04-09 |
| 5303136 | Articulated lamp | — | 1994-04-12 |
| D321957 | Face shield | Burton L. Siegal | 1991-11-26 |
| 5014353 | Face shield | Burton L. Siegal | 1991-05-14 |
| D313866 | Track light fixture | — | 1991-01-15 |
| D312886 | Adjustable lighting fixture | — | 1990-12-11 |
| D305694 | Lighting fixture | — | 1990-01-23 |
| 4887196 | Recessed track lighting system | Scott L. Roos, Donald D. Biancalana, Donald J. Westgaard | 1989-12-12 |
| D295329 | Lamp | Scott L. Roos | 1988-04-19 |