Johan Petter Johansson

Johan Petter Johansson (1853–1943) was a Swedish inventor and industrialist from Enköping, best known for patenting the adjustable pipe wrench (1888) and adjustable spanner (1891–92) — tools later sold worldwide under the Bahco trademark. Later in life, as his eyesight declined, he turned his engineering skill to lighting, designing the adjustable Triplex lamp among his more than 110 patents.

Source: KulturNav