Inventor
Alan Anthony Barker
Inventor
Gravesend, GB
Overview
Patents· 1 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 transducers100%
PatentTitleYear
4,095,057'Frequency response testing apparatus'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to NAT RES DEV (1)· patent assignee history
1978Based in Gravesend, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NAT RES DEV | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gravesend, GB | 1 | 1978 |