Four B Corp. v. National Labor Relations Board Date Filed: December 18th, 1998 Citations: 325 NLRB No. 20, 163 F.3d 1177, 160 L.R.R.M. (BNA) 2015, 1999 Colo. J. C.A.R. 527, 1998 U.S. App. LEXIS 31541 Docket Number: 97-9577