William Hagerman
4Patents
4h-index
8Co-inventors
43Inventor score
Filing activity: Jul 26, 1990 → Dec 30, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5500889A | Method and apparatus for prioritizing a telephone call according to a level of service of an originator | Electricity | 47 | Expired |
| US5404350A | Routing calls destined for inaccessible destinations | Electricity | 45 | Expired |
| US5222128A | Telecommunication disaster plan | Electricity | 24 | Expired |
| US6752551B1 | Vertically expandable keyboard | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.