Fredrick E. Spangler
1Patents
1h-index
1Co-inventors
22Inventor score
Filing activity: Aug 14, 1987 → Aug 14, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4926496A | Method and apparatus for infrequent radio users to simply obtain emergency assistance | Electricity | 41 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.