Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4431132 | Control valve systems for gas water heaters | Christopher Halstead, Leslie G. Hammond | 1984-02-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4431132 | Control valve systems for gas water heaters | Christopher Halstead, Leslie G. Hammond | 1984-02-14 |