Wilfried Rettke
7Patents
5h-index
5Co-inventors
48Inventor score
Filing activity: Dec 29, 1978 → Jan 12, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4611938A | Mechanism for raising and feeding ink ribbons in typewriters and similar machines | Performing Operations; Transporting | 30 | Expired |
| US4239402A | Detachable wire matrix print head mounting structure | Performing Operations; Transporting | 9 | Expired |
| US4747714A | Mechanisms for selectively raising and transporting print ribbons and correction tapes | Performing Operations; Transporting | 8 | Expired |
| US4530613A | Device for monitoring paper in typewriters and similar machines | Performing Operations; Transporting | 8 | Expired |
| US4609297A | Print and correction ribbon drive system | Performing Operations; Transporting | 6 | Expired |
| US4753542A | Malfunction preventing arrangement of ribbon & correction tape | Performing Operations; Transporting | 1 | Expired |
| US4710042A | Method and apparatus for indexing the print hammer of typewriters or the like | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.