131495 ⎘
Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for coffered or ribbed ceilings with supporting beams for the shuttering used simultaneously as permanent reinforcement of the ribs
Method and device for strengthening and lightening floor and roof framing
#2Apparatus and method for composite concrete and steel floor construction
#3Modular form for cast-in-place concrete decks federally sponsored research
#4Apparatus and method for composite concrete and steel floor construction