JJ

Jacobus A. Jonkman

EI Etymonic Design Incorporated: 5 patents #1 of 4Top 25%
Overall (All Time): #977,441 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10477324 Test apparatus for binaurally-coupled acoustic devices John W. Cole, William A. Cole, Jonathan M. Pietrobon 2019-11-12
10171920 Test apparatus for binaurally-coupled acoustic devices John W. Cole, William A. Cole, Jonathan M. Pietrobon 2019-01-01
9961455 Test apparatus for binaurally-coupled acoustic devices John W. Cole, William A. Cole, Jonathan M. Pietrobon 2018-05-01
9860652 Test apparatus for binaurally-coupled acoustic devices John W. Cole, William A. Cole, Jonathan M. Pietrobon 2018-01-02
7062056 Directional hearing aid tester 2006-06-13