Specified Ceiling Systems

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Records under this name other than patents Specified Ceiling Systems holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

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Patent	Title	Status	Expires	Confidence
US 4,021,986	Modular ceiling framework Term ended Term ended no later than May 10, 1997 · Low confidence	Term ended	Term ended no later than May 10, 1997	Low confidence
US 4,135,441	Integrated air diffuser Term ended Term ended no later than Jan 23, 1999 · Low confidence	Term ended	Term ended no later than Jan 23, 1999	Low confidence
US 4,214,512	Drop ceiling air diffuser with horizontal discharge pattern Term ended Term ended no later than Jul 29, 2000 · Low confidence	Term ended	Term ended no later than Jul 29, 2000	Low confidence
US 4,332,005	Lighting panel for drop ceilings Term ended Term ended no later than May 25, 2002 · Low confidence	Term ended	Term ended no later than May 25, 2002	Low confidence
US 4,434,599	Drop ceiling frame construction Term ended Term ended no later than Mar 6, 2004 · Low confidence	Term ended	Term ended no later than Mar 6, 2004	Low confidence
US 4,475,446	High volume ceiling type air diffuser Term ended Term ended no later than Oct 9, 2004 · Low confidence	Term ended	Term ended no later than Oct 9, 2004	Low confidence
US 4,542,615	Drop ceiling framework Term ended Term ended no later than Sep 24, 2005 · Low confidence	Term ended	Term ended no later than Sep 24, 2005	Low confidence