William Hersey
7Patents
6h-index
4Co-inventors
56Inventor score
Filing activity: Feb 9, 1976 → Mar 26, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5144487A | Portable laser device for alignment tasks | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6763595B1 | Laser-based tool for indicating level, plumb and square | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6938350B1 | Apparatus for producing a reference plane | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7497018B2 | Laser-based alignment tool | Emerging Cross-Sectional Technologies | 20 | Active |
| USD571237S1 | Laser level detector | General | 9 | Expired |
| USD577299S1 | Laser level detector | General | 9 | Expired |
| US4053937A | Calibration timing bands | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.