(July 26, 2007) SAN JOSE, CA — The North American semiconductor equipment manufacturing book-to-bill ratio fell to 0.94 in June 2007, which the indicator hasn’t approached since an October 2006 ratio of 0.95. The dip belies the fact that booking and billing amounts are trending up slightly, and hitting highs for the year, said Stanley T. Myers, president and CEO, SEMI.