Patents per Year
Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5500978 | Vacuum cleaner apparatus and disposable bag for same | — | 1996-03-26 | |
| 4880713 | Releasable battery pack cap and holder | — | 1989-11-14 | $449,000 |
| RE33074 | Wet-dry vacuum cleaner | — | 1989-10-03 | |
| 4821366 | Wet-dry vacuum cleaner | — | 1989-04-18 | |
| D299062 | Hydro-massage appliance | H. Gerald Young, George J. Schimpf | 1988-12-20 | |
| D299063 | Hydro massage appliance mat | H. Gerald Young, George J. Schimpf | 1988-12-20 | |
| 4637221 | Mixing apparatus and method | — | 1987-01-20 | $109,000 |
| 4548054 | Mixing apparatus and method | — | 1985-10-22 | |
| 4542557 | Wet-dry vacuum cleaner | — | 1985-09-24 | |
| 4536914 | Wet-dry vacuum cleaner | — | 1985-08-27 | |
| 4492550 | Extrusion apparatus | — | 1985-01-08 | |
| 4303581 | Water dispersed primer-surfacer composition | Michael Yurcheshen, Roland W. Hight | 1981-12-01 | $2,178,000 |