Tor... patented?

[grarpamp]

For readers, since it was missing from the reply...
The main patent of relavence as requested, and
subsequently relegated via reply to 2) above...

6266704 Onion Routing Network For Securely Moving Data Through
Communication Networks

http://pimg-fpiw.uspto.gov/fdd/04/667/062/0.pdf
http://www.google.com/patents/US6266704
http://patft1.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=6266704.PN.&OS=PN/6266704&RS=PN/6266704

Many interesting references...

https://www.google.com/search?q=patent+6266704
http://patft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=0&f=S&l=50&TERM1=6266704&FIELD1=&co1=AND&TERM2=&FIELD2=&d=PTXT