Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5444953 | Interior corner joint simulating grout line for wall boards simulating tiles embedded in grout | Paul J. Koenig, Douglas F. Hutchings, Richard C. Manwell | 1995-08-29 |
| 5263294 | Extension joint simulating grout like for tile board | Paul J. Koenig, Douglas F. Hutchings, Richard C. Manwell | 1993-11-23 |
| 4493290 | Milk yield recording and concentrate feed ration calculation for dairy cows | — | 1985-01-15 |
| D268101 | Combination boat, camper, and utility trailer | Owen H. Pope | 1983-03-01 |