I believe patents are limited to 14 years, but something like this is
probably more of a copyright issue; copyrights are good for 28 years
and renewable for two additional 28 year periods for a total of 84
years. Of course, I've been wrong before. (sheepish grin)
Joe Wilkins
On Jan 15, 2008, at 5:35 PM, J. Downs wrote:
What made it possible to use HC that way was its "hint bits", a
system for indexing field contents which is not only proprietary
but patented as well. Hint bits made it ultra-fast for obtaining
data across the otherwise-complex structures that make up cards
and fields.
Certainly any such patent has expired by now. Patents are
enforceable a maximum of 20 years past the filing date.
J.
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