Apogee Acoustics, Inc.
2Patents
0Active
2Granted
25Portfolio score
Filing activity: Feb 22, 1983 → May 31, 1991
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4550228A | Ribbon speaker system | Electricity | 36 | Expired |
| US5195143A | Acoustical ribbon transducer loudspeaker system | Emerging Cross-Sectional Technologies | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.