Pittsburgh-based Intertech Security acquired Accent Electronic Systems Integrators Inc., based in Bridgeville. Terms of the deal were not disclosed. "The acquisition combines two complementary companies and creates a bigger, more sophisticated systems integrator," Intertech President Ron Petnuch said in a prepared statement. Combined 2013 revenue for the two western Pennsylvania companies is $41 million. Merging the businesses creates more opportunities and products for Intertech's customer…