http://www.computerhistory.org/tdih/July/7/
1936 – Henry F. Phillips received patents for a new kind of screw and the screwdriver used with it. Endless numbers of computer cases have been held together by it since.
http://www.google.com/patents?id=MINJAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q&f=false
1981 – The first solar-powered aircraft, Solar Challenger, flew 163 miles from Corneille-en-Verin Airport north of Paris across the English Channel to Manston Royal Air Force Base south of London, staying aloft 5 hours and 23 minutes.
http://www.nasa.gov/centers/dryden/news/FactSheets/FS-054-DFRC.html
Read Tom’s science fiction and other fiction books at Merritt’s Books site.