Inventor · disambiguated record
Helio Marins David Filho
Also filed as: FILHO HELIO MARINS DAVID
2 granted patents·25 citations·filing 2004–2006
61Inventor score
Technology areasE21B
Files withWELLSTREAM INT LTD2
Top patents by PatentIndex Score
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →