Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786205 | Environmental water conservation method and apparatus | Dan E. Hisken | 1988-11-22 |
| D281027 | Environmental water conservation cistern | Dan E. Hisken | 1985-10-15 |
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Skip to contentShowing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786205 | Environmental water conservation method and apparatus | Dan E. Hisken | 1988-11-22 |
| D281027 | Environmental water conservation cistern | Dan E. Hisken | 1985-10-15 |