Inventor · disambiguated record
Gwyn David Walter Parfitt
Also filed as: PARFITT GWYN D · PARFITT GWYN DAVID WALTER
4 granted patents·179 citations·filing 1987–2001
81Inventor score
Top patents by PatentIndex Score
4 records- 0181US6498984B2Locating positions on mapsYEOMAN NAVIGATION SYSTEMS LTD·Filed 2001·Granted Dec 24, 2002·60 cites·54 claims
- 0271US6304819B1Locating positions on mapsYEOMAN MARINE LTD·Filed 1996·Granted Oct 16, 2001·54 cites·29 claims
- 0370US6292137B1Direction indicating compassesYEOMAN MARINE LTD·Filed 1998·Granted Sep 18, 2001·53 cites·13 claims
- 0437US5278763ANavigation aidsQUDOS SA·Filed 1987·Granted Jan 11, 1994·12 cites·27 claims
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