sentences:  In Oakland, Pflueger flanked the stage with structures that appeared to be pillars supporting the proscenium but were instead layered, curved sheets of thin metal behind which lighting instruments cast light indirectly to give the columns a suffused glow.In 1931, he used the same concept to frame the stage at the Bal Tabarin (now Bimbo's 365 Club), and to bring a changing palette of color to the ceiling above the dance floor.Pflueger filed for and, in 1934, received two architectural lighting design patents, one for his ceiling grid with indirect lighting and one for the thin metal panels hiding lighting instruments.