CCH's patent was up for their Alien cam design as of May 23 2009 (or maybe earlier; someone mentioned that patents before 1994 had only a 17 year duration but I'm not sure about that). After seeing how quickly DMM jumped at producing their Dragon Cams (quite obviously based off the recently-expired BD C4 patent), I'm curious if someone will step up and remake the Alien. Maybe this time with better quality control... Is there a metallurgical engineer in the house?
See US patent #4832289 at:
http://patft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=1&p=1&f=G&l=50&d=PTXT&S1=4832289.PN.&OS=pn/4832289&RS=PN/4832289
Note: you will need a TIFF viewer plugin for your browser to see the actual patent document.