Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698908 | Lighting fixture optical assembly including relector/refractor and collar for enhanced directional illumination control | Gwen Barber | 2004-03-02 |
| RE38217 | Tubular skylight with improved dome | David A. DeBlock, Gwen Barber | 2003-08-19 |
| 6575601 | Lighting fixture optical assembly including relector/refractor and shroud | Paul D. Cardwell | 2003-06-10 |
| 5983581 | Tubular skylight with offset dome | David A. DeBlock, Joel E. Robinson | 1999-11-16 |
| 5743634 | Perforated reflector for an ornamental luminaire | Joel E. Robinson, Robert D. Towne, Jr. | 1998-04-28 |
| 5655339 | Tubular skylight with improved dome | David A. DeBlock, Gwen H. Kramer | 1997-08-12 |
| 5481445 | Transflection reflector having controlled reflected and transmitted light distribution | Dale A. Troppman, Gregg A. Motter | 1996-01-02 |
| 5321417 | Visual display panel | Vernon P. Voelzke, Troy A. Erickson | 1994-06-14 |
| 5249109 | Outdoor variable focus light fixture | John F. Denison, John A. Czerlanis | 1993-09-28 |
| 5228772 | Solar powered lamp having a cover containing a fresnel lens structure | Kim W. Mitchell | 1993-07-20 |
| 5207498 | Vacuum cleaner headlight | Randall K. Lawrence, Timothy W. Jackson | 1993-05-04 |
| D333008 | Adjustable exterior light | John S. Frost, David Tanner | 1993-02-02 |
| D332669 | Solar powered light with motion sensor | John S. Frost, David Tanner | 1993-01-19 |
| 5086379 | Low voltage outdoor floodlight having adjustable beam pattern, ball and socket mounting, and novel cable handling | John F. Denison, John A. Czerlanis | 1992-02-04 |
| 4969074 | Tier light including deflecting and refracting prisms | August Davis | 1990-11-06 |
| 4867682 | Dental impression tray | Paul D. Hammesfahr, Steven R. Jefferies | 1989-09-19 |
| 4839781 | Reflector/refractor | Josh T. Barnes | 1989-06-13 |
| D270577 | Luminaire reflector | Hendrik A. J. deVos | 1983-09-13 |
| 4398239 | Luminaire adapted for horizontal and vertical operation | Hendrik A. J. de Vos | 1983-08-09 |