Inventor · disambiguated record
Nis-Friedrich Ewald
Also filed as: EWALD NIS-FRIEDRICH
2 granted patents·67 citations·filing 1976–1987
66Inventor score
Top patents by PatentIndex Score
2 records- 0181US4054976ACombined precision boring and burnishing toolHEGENSCHEIDT GMBH WILHELM·Filed 1976·Granted Oct 25, 1977·26 cites·9 claims
- 0277US4866642AMethod and apparatus for determining the diameter of rail vehicle wheelsWILHELM HEGENSCHEIDT GES GMBH·Filed 1987·Granted Sep 12, 1989·41 cites·19 claims
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