Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6355180 | Swimming pool covering, heating, and cleaning system | — | 2002-03-12 |
| 4858117 | Apparatus and method for preventing computer access by unauthorized personnel | Joseph G. DiChiara, Harry W. Brown | 1989-08-15 |
| D285191 | Electric storage battery | John K. Humphreys | 1986-08-19 |
| 4579790 | Electric storage batteries | John K. Humphreys, Donald Jones | 1986-04-01 |
| 4562128 | Electric storage batteries | John K. Humphreys | 1985-12-31 |