Hans Zingl
3Patents
2h-index
1Co-inventors
30Inventor score
Filing activity: Jul 13, 1977 → May 23, 1984
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4128135A | Drill pipe handling mechanism | Fixed Constructions | 34 | Expired |
| US4194419A | Drill pipe handling mechanism | Fixed Constructions | 30 | Expired |
| US4539893A | Power feed system for a rotary drill | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.