 BOSTON--BUSINESS WIRE--Boston Properties, Inc. NYSE:BXP, the largest publicly traded developer, owner, and manager of Class A office properties in the United States, announced today that it completed the acquisition of Safeco Plaza, a 50-story, 800,000 square-foot, LEED-Platinum certified, Class A office property in Seattle, Washington. Safeco Plaza is currently 90 leased. This acquisition marks the Companys initial entry into the Seattle market, one of the most dynamic office markets in 