Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6779996 | Apparatus for casting a plumbing fixture | Walter S. Bergquist, Frank P. Williams | 2004-08-24 |
| 6428643 | Method and apparatus for casting a plumbing fixture | Walter S. Bergquist, Frank P. Williams | 2002-08-06 |