John D. Markham
3Patents
3h-index
—Co-inventors
33Inventor score
Filing activity: Feb 16, 1977 → Oct 11, 1983
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4092577A | Dynamic braking of direct current motors | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4450388A | Dynamic braking of direct current motors | Electricity | 8 | Expired |
| US4551659A | Trackside-controlled electric railway systems | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.