Gates of metal; washers of metal for gates of metal and doors; doors of metal; door bolts; bolts; latches of metal; non-electric door bells; door fittings of metal; door frames of metal; door knockers; ironwork for doors; lintels of metal; strap-hinges of metal; non-electric door openers; runners of metal for sliding doors; door handles of metal; door stops of metal; door panels of metal

Technical project studies; engineering; mechanical research; technical research; architectural consulting; design of interior decor; design of gates of metal and doors; construction drafting; styling (industrial design); surveying (engineers' services)