Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819909 | Self-closing valve for sanitary installations | Thomas G. Hart, Karl G. Ohaus, David J. Meisner | 1989-04-11 |
| 4565636 | Self-contained flow through sewage waste disposal system | Kenneth J. DeGraw, Brian Wilcockson, William R. Bocchini, Armen Bogossian, Steve Proios | 1986-01-21 |
| 4433443 | Self-contained flow through sewage waste disposal system | Kenneth J. DeGraw, Brian Wilcockson, William R. Bocchini, Armen Bogossian, Steve Proios | 1984-02-28 |
| D271708 | Sewerless toilet or similar article | Kenneth J. DeGraw | 1983-12-06 |
| D271707 | Sewerless toilet or similar article | Kenneth J. De Graw | 1983-12-06 |
| D271515 | Sewerless toilet or similar article | Kenneth J. DeGraw | 1983-11-22 |
| D270753 | Sewerless toilet or similar article | Kenneth J. DeGraw | 1983-09-27 |