The DUI telescoping torso US patent number is 4,464,795. It will expire in a few years and then I'm sure other manufacturers will eventually copy the design. <URL: http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/n etahtml/srchnum.htm&r=1&f=G&l=50&s1 '4,464,795'.WKU.&OS=PN/4,464,795&RS=PN/4,464,795> -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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