Inventor · disambiguated record

David Frederick Chalus

Also filed as: CHALUS DAVID FREDERICK

2 granted patents·7 citations·filing 2017–2020

49Inventor score
Technology areasE21B
Files withNAT OILWELL VARCO LP1NOV CANADA ULC1

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2 records

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →