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LZW patent (was: SSH never free)

Quoting Bob Nielsen:
> Does anyone know when the LZW patent expires?

        According to
http://www.patents.ibm.com/details?pn=US04558302__ it was awarded on
June 20, 1983.  This means that it will expire on June 20 or 21, 2003.

((lambda (x) (list x (list (quote quote) x)))
(quote (lambda (x) (list x (list (quote quote) x)))))
	-- A LISP quine written by Seth David Schoen

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