vintage office chair, 50's

Description

A sturdy office chair made of metal and black vinyl. Industrial design. Adjustable in several ways. Marked on the back: 'Patents: 550136-559558'. These are two Belgian patents issued in 1956 and 1957 to J. Verhulst of Brussels for the technical inventions of this chair. The manufacturer of the chair is unknown, but probably Belgian. In good condition.
Height 82 cm, width 44 cm, depth 46 cm.