John A. Engelmann
1Patents
1h-index
—Co-inventors
19Inventor score
Filing activity: Feb 27, 1980 → Feb 27, 1980
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4339265A | Sewage treatment method and apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.