üzemeltették
"üzemeltettük" is the first-person plural past tense form of the Hungarian verb "üzemeltet," which translates to "to operate," "to run," or "to manage." Therefore, "üzemeltettük" signifies that "we operated," "we ran," or "we managed" something. This verb form is commonly used in contexts describing the past actions of a group or organization in maintaining or controlling a facility, system, or business.
For instance, one might say "A gyárat üzemeltettük két évig," meaning "We operated the factory for two