VMX/OPCOM
2Patents
0Active
2Granted
25Portfolio score
Filing activity: Feb 24, 1988 → Apr 16, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4926462A | Interface to and operation of a voice messaging system | Electricity | 140 | Expired |
| US5117451A | Interface to and operation of a voice messaging system | Electricity | 36 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.