By the 1970's, they made a variety of power tools, such as the Wolf PH3 Portable Planer.
In 1978, they employed 850 people. The company was purchased by Kango Tools Ltd. out of Peterborough, England in the 1980's. The Wolf name disappeared as the Kango line was "rationalized," as the euphemism goes. Kango was acquired in turn by Atlas-Copco. In the early 2000's, Kango was sold to a Hong Kong firm, TI. The Wolf factory in London is long since gone, although imitations of their products may have been made under license by a firm in India.
There's an interesting side-story concerning Wolf Electric Tools and Australia's youngest winner of the Victoria Cross: Frank Partridge, VC.