Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155469 | Wireless alarm system | Jon P. Hartmann | 1992-10-13 |
| 5004999 | Extended RF range alarm system | Jon P. Hartmann | 1991-04-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155469 | Wireless alarm system | Jon P. Hartmann | 1992-10-13 |
| 5004999 | Extended RF range alarm system | Jon P. Hartmann | 1991-04-02 |