1
Gordon E Clunn: Clean room ceiling construction. Sroufe Zamecki Payne & Lundeen, July 23, 1991: US05033247 (32 worldwide citation)

A suspension ceiling for clean room installations is disclosed. The ceiling has a suspended ceiling support structure having a plurality of grid openings including a vertical member between each grid opening and flanges extending horizontally from each vertical member so as to form a horizontal surf ...


2
Gordon E Clunn: Clean room ceiling construction. Daniel N Lundeen, November 6, 1990: US04967530 (29 worldwide citation)

A suspension ceiling for clean room installations is disclosed. The ceiling has a suspended ceiling support structure having a plurality of grip openings including a vertical member between each grid opening and flanges extending horizontally from each vertical member so as to form a horizontal surf ...



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