Hubert Kowalewski, the mastermind behind ART, has passed away

Hubert Kowalewski, the inventor of the LockJack and many other groundbreaking tree climbing equipment has died. The man behind the well-known ART brand was 57-years-old.

According to Freeworker.de, Hubert suffered from severe depression for a long time.

You can read the full story from Freeworker.de here.