Inventor · disambiguated record
Karl Lengsfeld
Also filed as: LENGSFELD KARL
4 granted patents·71 citations·filing 1976–1986
78Inventor score
Top patents by PatentIndex Score
4 records- 0182US4709794AElectromotive variable-speed and control drive particularly for use in industrial sewing machinesFRANKL & KIRCHNER·Filed 1986·Granted Dec 1, 1987·16 cites·4 claims
- 0278US4556132AAdjustable electromagnetic clutch/brakeFRANKL & KIRCHNER·Filed 1982·Granted Dec 3, 1985·30 cites·18 claims
- 0366US4135612AElectric motor with air cooled clutch and brakeFRANKL & KIRCHNER·Filed 1976·Granted Jan 23, 1979·17 cites·8 claims
- 0463US4703841AAdjustable electromagnetic clutch brakeFRANKL & KIRCHNER GMBH CO KG F·Filed 1985·Granted Nov 3, 1987·8 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →