Inventor · disambiguated record
Herbert Perfahl
Also filed as: PERFAHL HERBERT
2 granted patents·25 citations·filing 1997–1997
60Inventor score
Technology areasB63H
Files withVOITH HYDRO GMBH & CO KG2
Top patents by PatentIndex Score
2 records- 0157US5993157ACycloidal propeller having wings operated by hydraulic clutchesVOITH HYDRO GMBH & CO KG·Filed 1997·Granted Nov 30, 1999·15 cites·4 claims
- 0246US6065935ACycloidal propeller having blades which may be set into a sailing positionVOITH HYDRO GMBH & CO KG·Filed 1997·Granted May 23, 2000·10 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →