Briefly:

Chester Farris, formerly vice president of San Diego’s Litel Instruments, has been appointed executive vice president and chief operating officer of Siemens Solar Industries of Camarillo. . . . Cellular One of Ventura County, part of McCaw Cellular Communications Inc., has officially changed its name to AT&T; Wireless Services, as part of its parent company’s $11.6-billion merger with AT&T; in 1994. . . . Hillcrest Ventures, a Westlake Village real estate company, has purchased for an undisclosed price the 41,500-square-foot building at 299 W. Hillcrest Drive in Thousand Oaks for use as an office complex.