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The Patent Garden

Breeder

STEMKENS HENRICUS GODEFRIDUS WILHELMUS

26 US plant patents, granted between 2012 and 2020.

Filed under the STEMKENS name. Related entities are listed separately on the STEMKENS search, because a company and a person are not the same filer even when the name matches.

Still under patent — 26 cultivars

Soonest to come off patent first. You may not propagate these for sale until the date shown.