Assignee
MA JOHN
3 granted patents·96 citations·filing 1981–1984
Top patents by PatentIndex Score
3 records- 0191US4352209AUp-down frequency converter for cable T.V.MA JOHN·Filed 1981·Granted Sep 28, 1982·68 cites·5 claims
- 0263US4626862AAntenna having coaxial driven element with grounded center conductorMA JOHN·Filed 1984·Granted Dec 2, 1986·19 cites·5 claims
- 0348US4619000ACATV converter having improved tuning circuitsMA JOHN·Filed 1984·Granted Oct 21, 1986·9 cites·7 claims
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