JB

Jacques Y. Balch

TT Telecommunications Radioelectriques Et Telephoniques T.R.T: 1 patents #24 of 65Top 40%
📍 Lannion, FR: #353 of 705 inventorsTop 55%
Overall (All Time): #4,036,117 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4454384 Hands free telephone with switchable gain in the two speech signal paths Gilbert M. M. Ferrieu, Yves J. F. Hetet 1984-06-12