Donald E. Ingermann
10Patents
9h-index
9Co-inventors
61Inventor score
Filing activity: Sep 10, 1979 → Oct 15, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4959884A | Combination bowling lane stripper and dressing apparatus | Human Necessities | 29 | Expired |
| US4510642A | Combination bowling lane stripper and duster | Human Necessities | 28 | Expired |
| US4246674A | Automatic bowling lane stripper | Human Necessities | 27 | Expired |
| US5063633A | Fluid handling apparatus for bowling lane cleaning device | Human Necessities | 23 | Expired |
| US5161277A | Variable speed transfer roller for bowling lane dressing apparatus | Human Necessities | 20 | Expired |
| US4962565A | Automatic vacuum bowling lane stripper | Human Necessities | 19 | Expired |
| US4920604A | Automatic vacuum bowling lane stripper | Human Necessities | 18 | Expired |
| US4856138A | Bowling lane vacuum with floating head | Human Necessities | 15 | Expired |
| US4757831A | Golf club cleaning machine | Human Necessities | 10 | Expired |
| USD281362S | Bowling lane duster | General | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.