Sleep testing technology firm NovaSom Inc. - backed by some Philadelphia-area investors - has filed for Chapter 11 bankruptcy and is in talks to be bought by a Florida medical technology services company. NovaSom said it would shut down its Baltimore-area headquarters on Sept. 1, a move that impacted 169 employees. Shortly thereafter, on Aug. 2, the company filed for bankruptcy, according to court documents filed in the United States Bankruptcy Court for the District of Delaware. In the wake...