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
Join the waitlist — get patent alerts
Get an alert when Gwyn David Walter Parfitt files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →