Complex sentence: Fuller was a member of the American Society of Mechanical Engineers, American Association for the Advancement of Science, Astronomical Society of the Pacific, American Institute of Electrical Engineers, and Sons of the American Revolution, of which he served as president of the Vermont chapter.
Split into simpler sentences: Fuller was a member of the American Society of Mechanical Engineers, American Association for the Advancement of Science, Astronomical Society of the Pacific, American Institute of Electrical Engineers. He was active in the Sons of the American Revolution, and served as president of the Vermont chapter.