Dexterra, a Bothell, WA-based developer of mobile software, has been acquired by Antenna, a rival company based in Jersey City, NJ, according to an announcement by Antenna today. Financial terms weren’t announced, but TechFlash has reported that Dexterra was ultimately purchased for $18 million. As part of the acquisiton, Antenna said it would be keeping the majority of Dexterra’s employees, and will keep offices in Bothell, WA, Toronto and Reading, U.K., according to a statement on Antenna’s website. Dexterra was founded in 2002.