Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7871131 | Panel | Erwin W. Rowland | 2011-01-18 |
| 6886890 | Panel | Erwin W. Rowland | 2005-05-03 |
| 6257193 | Engine with a direct passage from the oil reservoir to the oil pump | Karen Alpan, David G. Bergman | 2001-07-10 |
| 5970928 | Self restricting engine cooling system deaeration line | Richard A. Smietanski | 1999-10-26 |
| D337003 | Chair | — | 1993-07-06 |
| 4648653 | Stackable armchair | — | 1987-03-10 |
| D280681 | Tablet-arm chair | — | 1985-09-24 |
| 4456296 | Stackable armchair | — | 1984-06-26 |
| D271066 | Armchair | — | 1983-10-25 |
| D270976 | Compactly stackable armchair | — | 1983-10-18 |
| D268798 | Counter armchair | — | 1983-05-03 |
| 4366980 | Stackable armchair | — | 1983-01-04 |
| 4318556 | Chair and seat-back unit therefor | — | 1982-03-09 |
| D262675 | Armchair | — | 1982-01-19 |
| D262677 | Chair | — | 1982-01-19 |
| 4304436 | Stackable chair | — | 1981-12-08 |
| D258480 | Combined seat and backrest unit for a chair | — | 1981-03-10 |