Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7768142 | Gravity motor and method | — | 2010-08-03 |
| 6445078 | Gravity electrical generating system | — | 2002-09-03 |
| 4441483 | Portable furnace for wearing apparel | Leonard K. Cieslak | 1984-04-10 |
| 4334519 | Portable heater for generating and circulating heat in wearing apparel | Leonard K. Cieslak | 1982-06-15 |
| 4281418 | Portable furnace for wearing apparel | Leonard K. Cieslak | 1981-08-04 |
| 4180922 | Boot warmer | Leonard K. Cieslak | 1980-01-01 |