The invention concerns {HEAD ~ a device} for erecting walls and {TAIL ~ ceilings} especially for exhibition purposes as at fairs and to be used as exhibition pavilions, free standing structures, single or multi story lobby booths and the like 
for erecting
The invention concerns { HEAD ~ a device } for erecting walls and { TAIL ~ ceilings } especially for exhibition purposes as at fairs and to be used as exhibition pavilions , free standing structures , single or multi story lobby booths and the like
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