Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662955 | Calibration method and apparatus for coffee grinder and brewer | Donald R. Buttle, David G. Motkowski | 1997-09-02 |
| 5660336 | Control apparatus and method for coffee grinder and brewer | Donald R. Buttle, David G. Motkowski | 1997-08-26 |