Colvern Limited
1Patents
0Active
1Granted
19Portfolio score
Filing activity: Jul 21, 1981 → Jul 21, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4400686A | Variable electrical resistance device | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.