Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355609 | Laser beam sighting apparatus with a selectively adjustable beam width | — | 1994-10-18 |
| 4734950 | Cleaning apparatus for exterior of elongated members | Robert W. Schenke, Michael A. Schenke | 1988-04-05 |
| 4681534 | Candle holder with drain holes | Robert W. Schenke | 1987-07-21 |
| 4680683 | Battery and bulb conversion cartridge for self-feeding candle holder | Robert W. Schenke | 1987-07-14 |