Coffee delivery drone patent from IBM(patft.uspto.gov)

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10040551.PN.&OS=PN/10040551&RS=PN/10040551