Frank W. Hetman
3Patents
3h-index
3Co-inventors
47Inventor score
Filing activity: Mar 11, 1977 → Oct 29, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4067163A | Thermally insulated and connected window frame members and the method of making the same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4136419A | Apparatus for cleaning a column of windows and wall surfaces of a building | Human Necessities | 15 | Expired |
| US6338222B1 | Universal sash tether clasp and anchoring apparatus for window counterbalancing system | Fixed Constructions | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.