sentences:  Arthur M. Dula
  
  Arthur M. ("Art") Dula (born in Arlington, Virginia) is a space lawyer, a patent attorney, the literary executor for major science fiction author Robert A. Heinlein and chairman, founder of the private spaceflight company, Excalibur Almaz.Art Dula's law practice focuses on aerospace and intellectual property law, technology licensing, business start-up and development, patents, contracts, corporations, securities, copyrights and trademarks.