Inventor · disambiguated record
Rudolf Douwenga
Also filed as: DOUWENGA RUDOLF
2 granted patents·39 citations·filing 1977–1981
61Inventor score
Technology areasB65B
Files withLOCKWOOD INTERNATIONAL BV2
Top patents by PatentIndex Score
2 records- 0175US4169345ADevice for opening out the filling apertures of bagsLOCKWOOD INTERNATIONAL BV·Filed 1977·Granted Oct 2, 1979·34 cites·8 claims
- 0227US4441304AApparatus for opening out the filling openings of bags of foil material or the like which are connected together in the manner of a bandLOCKWOOD INTERNATIONAL BV·Filed 1981·Granted Apr 10, 1984·5 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →