Group Four Design
1Patents
0Active
1Granted
25Portfolio score
Filing activity: Jan 16, 1990 → Jan 16, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4997134A | Document shredding machine and method | Performing Operations; Transporting | 27 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.