Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8575523 | Planar heating element for underfloor heating | Edward Chivers, Normal L. Loewen, Robert Amborsky | 2013-11-05 |
| 5198955 | Sealed plug-in GFCI | — | 1993-03-30 |
| 4990744 | Under floor covering heating systems | — | 1991-02-05 |