MOBEX COMPLETES GRANT INDUSTRIES <GTX> TENDER Mobex Corp, a private building product concern, said as of late yesterday it had accepted about 2.3 mln shares or 98 pct of Grant Industries Inc under a tender offer. The 7.75 dlrs a share cash offer expired at 2000 EST yesterday. Mobex said its Mobex Acquisition Corp unit accepted 2,316,940 shares of Grant common, or about 98 pct of the 2,369,799 shares presently outstanding, at the tender price.