Inventor · disambiguated record
John R. Hagstrom
Also filed as: HAGSTROM JOHN · HAGSTROM JOHN R · RADZAI ROY R
3 granted patents·10 citations·filing 1978–2015
62Inventor score
Top patents by PatentIndex Score
3 records- 0165US9595246B2Adjustable brass valveHAGSTROM JOHN·Filed 2015·Granted Mar 14, 2017·3 cites·20 claims
- 0257US7884273B2Method and use of warm-up instructional video for wind instrumentHAGSTROM JOHN R·Filed 2009·Granted Feb 8, 2011·1 cites·2 claims
- 0355US4166694AMethod for optically distorting readout reticlesUS NAVY·Filed 1978·Granted Sep 4, 1979·6 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →