Inventor · disambiguated record
Karl-Heinz Dreifert
Also filed as: DREIFERT KARL-HEINZ
3 granted patents·137 citations·filing 1991–1993
76Inventor score
Files withWEIDTMANN WILHELM KG3
Top patents by PatentIndex Score
3 records- 0181US5318333ADevice for locking and unlocking sashes in door- or window framesWEIDTMANN WILHELM KG·Filed 1993·Granted Jun 7, 1994·54 cites·20 claims
- 0279US5370428AMechanism for releasably locking sashes in door-or window framesWEIDTMANN WILHELM KG·Filed 1993·Granted Dec 6, 1994·65 cites·26 claims
- 0344US5111615AWindow with pivotable sash and mechanism for locking the sash in closed positionWEIDTMANN WILHELM KG·Filed 1991·Granted May 12, 1992·18 cites·37 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →