DB

Donald R. Buttle

NC National Controls: 2 patents #1 of 3Top 35%
📍 Bolingbrook, IL: #2 of 28 inventorsTop 8%
🗺 Illinois: #421 of 4,656 inventorsTop 10%
Overall (1997): #42,093 of 185,788Top 25%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5662955 Calibration method and apparatus for coffee grinder and brewer William A. Joseph, Jr., David G. Motkowski 1997-09-02
5660336 Control apparatus and method for coffee grinder and brewer William A. Joseph, Jr., David G. Motkowski 1997-08-26