Inventor · disambiguated record
Heinrich Grotenhofer
Also filed as: GROTENHOEFER HEINRICH · GROTENHOFER HEINRICH
3 granted patents·74 citations·filing 1990–1992
74Inventor score
Top patents by PatentIndex Score
3 records- 0164US5051033ABracing device for a self-advancing shield tunnelling machineEICKHOFF GEB·Filed 1990·Granted Sep 24, 1991·35 cites·24 claims
- 0256US5076729ATunnel-driving and support systemEICHOFF MASCHINENFABRIK GEB·Filed 1990·Granted Dec 31, 1991·26 cites·19 claims
- 0334US5171105AProcess and device for lining tunnels and ducts having circular and non-circular cross-sections, especially for canal and tunnel constructionEIKHOFF MASCHINENFABRIK U EISE·Filed 1992·Granted Dec 15, 1992·13 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →