Inventor · disambiguated record
Charles Frei
Also filed as: FREI CHARLES
3 granted patents·39 citations·filing 1979–1980
70Inventor score
Files withCHARMILLES SA ATELIERS3
Top patents by PatentIndex Score
3 records- 0174US4375588AProcess and apparatus for controlling the concentration of solid particles in suspension in an EDM machining fluidCHARMILLES SA ATELIERS·Filed 1980·Granted Mar 1, 1983·18 cites·12 claims
- 0268US4251706AElectrode tool for EDM and method for utilizing such electrode toolCHARMILLES SA ATELIERS·Filed 1979·Granted Feb 17, 1981·19 cites·12 claims
- 0325US4362989AProcess and apparatus for controlling the concentration of solid particles in suspension in a liquid fluidCHARMILLES SA ATELIERS·Filed 1980·Granted Dec 7, 1982·2 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →