Fenntette
Fenntette is a term that can refer to several things, depending on the context. In Hungarian, "fenntartotta" is the past tense of "fenntartani," meaning "to maintain" or "to reserve." This could be used in a sentence like "He maintained the tradition" or "She reserved a seat."
More specifically, "fenntartotta" can also be used in a legal or official capacity, such as "the company
Outside of Hungarian, the term "fenntette" is not widely recognized. It's possible it could be a misspelling