Inventor · disambiguated record
John Fredrickson
Also filed as: FREDRICKSON JOHN
2 granted patents·1 pending application·200 citations·filing 1988–2007
71Inventor score
Top patents by PatentIndex Score
3 records- 0185US4988333AImplantable middle ear hearing aid system and acoustic coupler thereforSTORZ INSTR CO·Filed 1988·Granted Jan 29, 1991·102 cites·35 claims
- 0284US5085628AImplantable hearing aid coupler deviceSTORZ INSTR CO·Filed 1989·Granted Feb 4, 1992·98 cites·9 claims
- 0324US2009095153A1Natural gas recovery system and methodROPER PAUL·Filed 2007·Application pending·0 cites
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