General Electric Co. pension fund, Fairfield, Conn., and Crescent Real Estate Equities set up a joint venture to acquire urban and suburban office properties, said Tim Benedict, GE spokesman. Scott F. McMullin, senior managing director at Holliday, Fenoglio, Fowler, a real estate intermediary that arranged the alliance, said the venture will target $300 million to $400 million in deals, with $100 million of that in equity contributed by GE and Crescent. The remainder will be leveraged. "GE will probably contribute most of the equity, but the amounts have not been set, Mr. McMullin said. Mr. Benedict declined to say how the $36.7 billion GE pension plan will fund the deals.