William D. Simmons
1Patents
0Active
1Granted
19Portfolio score
Filing activity: Jun 20, 1977 → Jun 20, 1977
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4080792A | Soil compaction system | Fixed Constructions | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.