Vibrascrew Inc.
4Patents
0Active
4Granted
25Portfolio score
Filing activity: Nov 30, 1979 → Jan 13, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4475669A | Non-flooding belt feeder | Physics | 12 | Expired |
| US5007561A | Non-flooding set rate feeder | Physics | 10 | Expired |
| US4310106A | Side outlet portable container unloader | Performing Operations; Transporting | 5 | Expired |
| US5937996A | Vibrating screw feeder | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.