Inventor
Steven L. Machacek
Inventor
Alexandria, VA, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers80%
G06FElectric digital data processing20%
PatentTitleYear
6,215,884'Piezo speaker for improved passenger cabin audio system'20016,181,797'Piezo speaker for improved passenger cabin audio systems'20015,901,231'Piezo speaker for improved passenger cabin audio systems'19995,638,456'Piezo speaker and installation method for laptop personal computer and other multimedia applications'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2001Patents assigned to NOISE CANCELLATION TECH (4)· patent assignee history
1997–2001Based in Alexandria, VA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NOISE CANCELLATION TECH | 4 | 1997–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Alexandria, Virginia, US | 4 | 1997–2001 |