Assignee
HEARING EVALUATION & ACOUSTIC
2 granted patents·90 citations·filing 1975–1975
Top patents by PatentIndex Score
2 records- 0170US4060701AMethod for testing acoustical attenuation of hearing protectorsHEARING EVALUATION & ACOUSTIC·Filed 1975·Granted Nov 29, 1977·66 cites·5 claims
- 0255US4020298AApparatus for testing acoustical attenuation of hearing protectorsHEARING EVALUATION & ACOUSTIC·Filed 1975·Granted Apr 26, 1977·24 cites·6 claims
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