John R. Frey
1Patents
0Active
1Granted
20Portfolio score
Filing activity: May 26, 1995 → May 26, 1995
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5595033A | Plastic block | Fixed Constructions | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.